The case for buying used isn't complicated: you pay less for the same thing, and in many categories the quality difference between new and gently used is somewhere between minimal and nonexistent.
The 10 That Almost Always Make Sense
1. Electronics
Phones, laptops, and tablets depreciate faster than almost any other category. Buying a previous-generation device in good condition gets you 90% of the experience at 40–60% of the price.
2. Furniture
Solid wood furniture doesn't wear out. A well-made dresser from 20 years ago is often better built than anything in the same price range new. Inspect for structural integrity and water damage.
3. Books and Media
A used book has exactly the same words as a new one. Almost always half the price or less.
4. Exercise Equipment
The resale market is flooded with barely-used exercise equipment. People buy it with good intentions and use it far less than expected.
5. Kitchen Appliances
KitchenAid stand mixers, Vitamix blenders — built to last decades. Buying one used at half retail makes a lot of sense.
6. Tools
Professional-grade used tools beat cheap new ones every time. A used DeWalt drill will outperform a new no-name brand consistently.
7. Musical Instruments
Instruments lose little functionally with age. The economics of buying used instruments are sound.
8. Baby Gear (with exceptions)
Strollers, high chairs, baby clothing — excellent used purchases. Exception: safety devices like car seats where standards and recall status matters.
9. Clothing and Accessories
Quality clothing holds up well. A used Patagonia jacket at half retail is the same jacket.
10. Outdoor and Sporting Equipment
Camping gear, kayaks, bikes — used seasonally by most people. Inspect for structural damage and UV degradation.
The 3 Where New Is Usually the Right Call
1. Safety Equipment
Helmets, car seats, climbing harnesses. The stakes are too high to save $40.
2. Mattresses
Hygiene. Some things are better new.
3. Anything With a Short Product Lifespan
Batteries, products with expiration dates. No advantage if the product is already past its prime.