Pretty much every useful eBay rule can be distilled to this: think before you bid. Is that sneaker you're watching a rare OG that hardly ever shows up in your size? Then by all means, bid away and best of luck. Or is it the new hotness (sorry, Agent J) that just sold out of stores yesterday? If that's the case, maybe it's best to hold off for a bit. You didn't get them early, so what's a little more time? Prices can be dictated by the trends of the moment, which means the latest greatest probably start off selling way high, fall off when whatever the NEXT hot drop is hits, then slowly rise again. You're supposed to buy low and sell high, not the opposite.