the problem with scalping at the low end is you very quickly push the price into the next tier of cards. at $250 i'm walking out with one. at $350 there are better options for the money. it's easy to do at the top end when the sky is the limit or if there is no other option (like the new apple/samsung/google phones etc) but gpu's sit in clear pricing/performance tiers and once you hit the next performance tier, you lose any leverage you might have had for the higher price.
i remember the early iphone days as well. i'd get everyone i knew to preorder one (around $750 or so back then) and we'd pick them up on release. then i'd walk over to the apple store with a handful of unopened boxes and say "first $1500 cash gets one". then i'd pay my friends cost plus a little bit and pocket a nice profit.
few months later when stock was readily available i'd buy one for myself at msrp. great part was when at&t had the exclusive. you could then sell the used one unlocked for t-mobile for almost new price. i had a new iphone every year and made a ton of cash doing it
i understand why the scalpers do it for sure, but we at least had to physically pick it up one per person. it's to easy now with bots clearing out online stock in 15 seconds so no one gets a chance. we stood in line to get it so we could flip it for a profit. same went for the must have toy of the year, concert tickets, and so on and so on. i was in line with 1000 other people and we all had the same chance to get it if you got their early enough.