At least in MD, everything at the chains (Goodwill especially) gets hit hard by resellers who grab everything of potential value the second it leaves the stock room. Independent places tend to be best with not tolerating that and also getting decent donations. The small charity shops sometimes have good finds but it's 95% old man clothes. Even if you find something that's a great deal, odds are that it's going to be very difficult to pull off unless you're really good at pulling off 1980s rich retired lawyer.