A 1m increased bid shouldn't even be considered valid anyways unless the seller is a complete douche which I assume he isn't, so you should probably ignore his 1m bids
a bid is a bid, people win bids on ebay all the time bidding 1 cent over, at least the extra 10m will cover some of the taxes 510m >.>
You can have it, wasn't even planning on buying it after +500m. I'll just farm my own, since i only need 1.