Buying secondhand is such a hit or miss experience. Either the item is perfect, vintage, great quality, superb fit, worth every cent. Or it's complete garbage, was sown poorly to a generic one size fits all, falls apart within one week or one month and makes you bitterly regret the purchase. There doesn't seem to be an in-between, lol.
As it is, I love buying secondhand, but that works only for vintage brands and hand-me-downs, things that are nice and have been discontinued a decade or two ago, and more. For anything else, outlet stores are best.