I have been thrifting for a decade. Here is what actually works and what the guides leave out. Most secondhand shopping advice treats it like a treasure hunt with no system. Go often, be patient, check for stains. This is fine advice but it is incomplete. Good secondhand shopping is a skill that gets better with a clear strategy.
The platforms and the physical stores serve different purposes. Knowing which to use for what changes how efficiently you shop and how often you actually find good things.
Which platform for what
Poshmark is best for brand-name clothing at 40 to 70 percent below retail. The search function is strong once you know what brand and size you want. The best use: searching for a specific item you already know you want. "Madewell straight jeans size 28" will surface dozens of options. The worst use: browsing without a target.
The RealReal is where to buy designer pieces. Authentication is real (not perfect, but they do catch obvious fakes) and the selection of quality leather goods, designer denim, and luxury knitwear is good. Prices are higher than Poshmark but you get more confidence in authenticity. Worth it for significant purchases.
ThredUp is for basics and everyday clothing at very low prices. Do not go here for special pieces. Go here for a white linen blouse, a grey crewneck, a pair of straight-leg trousers in a neutral color. The quality varies enormously but the prices are low enough to absorb the occasional miss. Local thrift stores are still the best for browsing, for finding unexpected pieces, and for the lowest prices if you are willing to sort.
What to look for and what to avoid
Buy secondhand: outerwear, blazers, leather goods, quality denim, structured bags, shoes in excellent condition, wool and cashmere knitwear. These items last, hold up to wear, and represent the best secondhand value. A well-made wool blazer at a thrift store for $18 is genuinely a good buy. A fast-fashion blazer at the same store for $18 is not.
Be cautious buying secondhand: bras, swimwear (hygiene is a real issue even with washing), anything with significant pilling or fabric thinning, items with odors that do not wash out (smoke smell is very persistent), and shoes that have been broken in to someone else's foot shape. The last one is underrated. Leather shoes conform to the previous wearer's gait over time, and that is difficult to reverse.
Check fabric composition on the label, not just how something looks. A beautiful blouse that turns out to be 100% polyester will feel like wearing a plastic bag. In a thrift store, the label tells you what you are actually buying. Quality secondhand pieces are almost always natural fiber or high-quality blends.
The mental approach that makes secondhand shopping work
Have a list before you go. Know what you are looking for: "a camel coat in wool, size medium, structured silhouette" is a searchable target. "Something good" is not. Without a target, you buy things because they are cheap, which defeats the purpose. Cheap bad purchases are still bad purchases.
The same fit standards apply secondhand. A piece that does not fit does not become wearable because it cost $12. Apply the same question you would in any store: would I buy this at full price if it fit me perfectly? If the answer is yes, and it fits, and the condition is good, buy it. If the answer requires multiple caveats, put it back.
Secondhand shopping rewards patience and consistency more than luck. Go to the same thrift stores on a rotating basis because stock turns over weekly. Save searches on Poshmark for specific items. Set up alerts on The RealReal for categories you want. The finds come more often when you have a system running in the background rather than shopping in a single frenzied session.
