Buy It for Life: Reddit's Favorite Durable Items and Their Cost Per Use

Reddit's r/BuyItForLife community has over 1.8 million members united by a single philosophy: stop buying disposable junk and invest in things that last. The subreddit is a treasure trove of recommendations for products that survive years, decades, and sometimes generations of use.

But recommendations alone do not tell the full story. A product that lasts 30 years but costs $500 and gets used once a month has a very different cost per use than one that lasts 10 years but gets used daily. So we took Reddit's most frequently recommended BIFL items and ran the numbers.

Here is what the cost per use actually looks like for the products r/BuyItForLife swears by.

1. Darn Tough Socks

Reddit's take: Possibly the single most recommended item on r/BuyItForLife. The brand's unconditional lifetime warranty means you can return worn-out socks for free replacements forever.

• Price: $20-28 per pair
• Lifespan: 3-7 years of regular wear (effectively forever with warranty)
• Usage: Worn once per week in a rotation of 7 pairs
• Cost per use: $0.08-0.11 (or effectively $0 with warranty replacements)

Versus budget alternative: $3 cotton socks lasting 6-12 months = $0.06-0.12 per wear, but they lose elasticity, develop holes, and offer no temperature regulation. Over 10 years, you spend $30-60 on cheap socks versus $24 on one pair of Darn Tough that gets warrantied indefinitely.

2. Lodge Cast Iron Skillet

Reddit's take: The quintessential BIFL kitchen item. Lodge cast iron pans appear in nearly every "what should I buy" thread on the subreddit. They improve with use, are nearly indestructible, and cost a fraction of premium cookware.

• Price: $20-35 (12-inch skillet)
• Lifespan: Multiple generations (50-100+ years)
• Usage: 3-5 times per week
• Cost per use: $0.002-0.004 over 50 years

This is the lowest cost per use item on the list. A $25 Lodge skillet used four times per week for 50 years delivers 10,400 uses at $0.002 per use. Even if you only keep it for 10 years, the cost per use is $0.01.

3. Victorinox Swiss Army Knife / Fibrox Chef's Knife

Reddit's take: Victorinox appears constantly in two contexts -- the classic Swiss Army Knife for everyday carry, and the Fibrox Pro chef's knife as the best value kitchen knife available.

Swiss Army Knife:

• Price: $30-40 (Spartan or Super Tinker)
• Lifespan: 20-30+ years
• Usage: 2-3 times per week
• Cost per use: $0.01-0.02

Fibrox Pro Chef's Knife:

• Price: $35-50
• Lifespan: 10-20 years with regular sharpening
• Usage: Daily
• Cost per use: $0.005-0.014

Professional chefs and home cooks on Reddit consistently recommend the Fibrox Pro over knives costing three to five times as much. At under two cents per use, it is one of the best value kitchen tools available at any price.

4. Toyota Corolla

Reddit's take: Mentioned frequently as the BIFL vehicle. Not exciting, not luxurious, but extraordinarily reliable. Multiple threads document Corollas with 200,000-300,000+ miles.

• Price: $22,000-26,000 (new)
• Lifespan: 15-20 years / 200,000-300,000 miles
• Usage: Daily
• Cost per use (per day): $3.01-4.75 (purchase price only, over 15-20 years)

Versus a less reliable car: A $22,000 vehicle that lasts 8 years costs $7.53 per day. The Corolla's durability cuts the daily ownership cost nearly in half. Factor in lower maintenance costs (Corollas average roughly $4,087 in total maintenance over 10 years compared to $7,500-12,000 for many competitors) and the value gap widens further.

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5. Doc Martens 1460 Boots

Reddit's take: A polarizing recommendation. Long-time BIFL enthusiasts note that quality has shifted since manufacturing moved from England to Asia. The "Made in England" line remains a strong BIFL pick. Standard line opinions are mixed.

Made in England line:

• Price: $200-250
• Lifespan: 10-15 years with resoling
• Usage: 3-4 times per week
• Cost per use: $0.10-0.16

Standard line:

• Price: $120-170
• Lifespan: 3-5 years
• Usage: 3-4 times per week
• Cost per use: $0.15-0.27

The Made in England line wins on cost per use despite the higher upfront price. This is a recurring pattern with BIFL items -- the premium version often costs less per use because it lasts dramatically longer.

6. Zojirushi Thermos / Travel Mug

Reddit's take: The Zojirushi vacuum-insulated mug or thermos is legendary on Reddit for keeping drinks hot for 6-12 hours and cold for 24+. It appears in nearly every "best thermos" or "what is worth the money" thread.

• Price: $25-40
• Lifespan: 5-10+ years
• Usage: Daily
• Cost per use: $0.007-0.022

Beyond the direct cost per use, a quality thermos saves money by reducing purchased coffee. If it prevents even two $4 coffee purchases per week, it saves $416 per year.

7. Patagonia Clothing

Reddit's take: Patagonia's repair program (Worn Wear) and build quality make it a frequent BIFL recommendation, particularly for fleeces, down jackets, and base layers. Their Ironclad Guarantee covers repairs for the life of the product.

• Price: $100-300 (depending on item)
• Lifespan: 8-15 years
• Usage: 2-4 times per week seasonally (roughly 100-200 uses per year)
• Cost per use: $0.06-0.38

A $150 Patagonia Better Sweater worn three times per week for 10 years: 1,560 wears at $0.10 per wear. The repair guarantee and resale value (used Patagonia holds value well) push the effective cost even lower.

8. KitchenAid Stand Mixer

Reddit's take: The Classic and Artisan models are frequently cited as lasting 20-30+ years. Many Redditors post photos of mixers inherited from parents and grandparents.

• Price: $280-450
• Lifespan: 20-30 years
• Usage: 1-3 times per week
• Cost per use: $0.09-0.43

For regular bakers, the cost per use is remarkable. A $350 Artisan used twice weekly for 25 years delivers 2,600 uses at $0.13 per use. Budget stand mixers at $60-80 typically last 3-5 years, costing $0.12-0.51 per use with inferior performance.

9. Osprey Backpacks

Reddit's take: Osprey's All Mighty Guarantee (free repair or replacement regardless of cause) makes their packs a staple BIFL recommendation. The Atmos, Exos, and Farpoint models are most frequently cited.

• Price: $150-300
• Lifespan: 10-20+ years (effectively indefinite with warranty)
• Usage: Daily for commuters, weekly-to-monthly for hikers
• Cost per use: $0.02-0.08 (daily use), $0.15-0.58 (weekly hiking)

10. Instant Pot / Pressure Cooker

Reddit's take: While some debate whether the Instant Pot qualifies as true BIFL (electronics have finite lifespans), many users report 7-10+ years of heavy use. The versatility factor -- it replaces a slow cooker, rice cooker, pressure cooker, and yogurt maker -- boosts its value.

• Price: $80-120
• Lifespan: 7-10 years
• Usage: 3-5 times per week
• Cost per use: $0.04-0.08

By replacing multiple single-purpose appliances ($30-60 each), the Instant Pot eliminates $100-200 in other purchases, pushing the effective cost per use even lower.

11. Leatherman Multi-Tool

Reddit's take: The Wave+ and Charge+ models dominate recommendations. Leatherman offers a 25-year warranty.

• Price: $90-130
• Lifespan: 15-25+ years
• Usage: 2-5 times per week
• Cost per use: $0.02-0.08

12. Filson / Carhartt Workwear

Reddit's take: Both brands appear regularly, with Filson praised for the Mackinaw Cruiser and bags, and Carhartt for work jackets, beanies, and overalls. Filson offers lifetime repairs.

Carhartt Detroit Jacket:

• Price: $80-130
• Lifespan: 8-15 years
• Usage: 3-5 times per week seasonally
• Cost per use: $0.06-0.17

Filson Mackinaw Cruiser:

• Price: $400-500
• Lifespan: 20-30+ years
• Usage: 3-4 times per week seasonally
• Cost per use: $0.17-0.33

Carhartt wins on cost per use. Filson wins on longevity and heritage. Both deliver exceptional value compared to fast fashion alternatives that cost $40-60 but last one to two seasons.

13. Weber Kettle Grill

Reddit's take: The 22-inch Weber Original Kettle is Reddit's most recommended grill. Simple design, minimal parts to break, and performs as well as grills costing five times more.

• Price: $110-170
• Lifespan: 10-20 years
• Usage: 1-3 times per week seasonally (50-100 uses per year)
• Cost per use: $0.06-0.34

14. Bialetti Moka Pot

Reddit's take: The stovetop espresso maker is a favorite among coffee enthusiasts on a budget. All-aluminum construction, no electronics to fail, and makes excellent coffee.

• Price: $25-40
• Lifespan: 10-20+ years (replace the rubber gasket every 1-2 years for $3)
• Usage: Daily
• Cost per use: $0.005-0.011

At roughly one cent per use -- and considering it replaces $3-5 coffee shop espresso -- the Bialetti may be the best return on investment of any kitchen item.

15. Benchmade or Spyderco Pocket Knife

Reddit's take: For everyday carry, these two brands dominate. Benchmade offers a LifeSharp service (free sharpening for life) and Spyderco is praised for blade steel quality.

• Price: $100-200
• Lifespan: 15-25+ years
• Usage: Daily
• Cost per use: $0.01-0.04

The BIFL Cost Per Use Ranking

Here is every item on this list ranked by cost per use, lowest to highest:

1. Lodge Cast Iron Skillet -- $0.002/use
2. Bialetti Moka Pot -- $0.005/use
3. Victorinox Chef's Knife -- $0.005/use
4. Zojirushi Thermos -- $0.007/use
5. Victorinox Swiss Army Knife -- $0.01/use
6. Benchmade/Spyderco Knife -- $0.01/use
7. Leatherman Multi-Tool -- $0.02/use
8. Osprey Backpack (daily) -- $0.02/use
9. Instant Pot -- $0.04/use
10. Carhartt Detroit Jacket -- $0.06/use
11. Weber Kettle Grill -- $0.06/use
12. Patagonia Better Sweater -- $0.06/use
13. Darn Tough Socks -- $0.08/use
14. KitchenAid Stand Mixer -- $0.09/use
15. Doc Martens (England) -- $0.10/use

The pattern is clear: the lowest cost per use items are the ones you use most often, not necessarily the cheapest to buy.

How to Use This List

You do not need to buy all 15 items. Instead, use this list as a framework:

1. Identify which categories matter to you. If you do not bake, skip the KitchenAid. If you do not hike, skip the Osprey.
2. Start with your highest-use items. What do you use every single day? That is where BIFL upgrades deliver the most value.
3. Replace items as they wear out. Do not throw away working items to buy BIFL. Wait until your current item needs replacing, then invest in the quality version.
4. Calculate your own cost per use. Your usage patterns may differ from averages. A cast iron skillet used once a month has a very different cost per use than one used daily.

The r/BuyItForLife community has done decades of collective research on what lasts and what does not. Combine their experience with cost per use math, and you have a powerful system for spending less on better things.

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