You sold them to me and after I bought them I made a new sell order. As you can see I do still have buy orders @400 and @401. That one @402 was mine as well. So please, buy them back and I made some profit. Last days i frequently checked that market, as you can see I have quite some buy and some sell orders, so I am almost 100% sure there never was a sell order @749 before. If there was already a sell order @749 my order would have been @748. You are unlucky I found this thread...