well to be frank, 2218 pieces sold for a seller with 17 feedbacks looks a bit Bizarre, but its ebay's job to confirm the QRs of the item with the seller. finally its their job and stake.
i feel you have been overreacting to so many issues. u need to calm down.
BTW, its not impossible source at that price esp since 4GB is almost going out of market, not impossible for the seller to stock one time and sell at the same price to have a big bang start to his business..
so boss... u need to chill, though i am thankfull to u for letting us know of the listing. i have never seen a listing where 2000+ items of same listing sold in one day and that too for a new seller!!!
regds