Right guys, i know that ebay bid for you, and if someone bids more than your last bid and your max is higher then it bids for you again, but in what amounts?

I.e. Im selling a car on ebay. Buy it now is 5400, reserve is 5200(i know people cant see reserve) and my starting price i set was £1.

NOW, the bidding is currently 820. Could the persons max be higher or would this be their max bid....as it seems daft when i have a buy it now price of 5400 to put in a low bid like that?????? I mean its obvious the reserve is gonna be around the 5k mark with my BIN price

Or will ebay have done that? But if ebay only bids that, and the guys max price was 5300 then he would win it but wouldnt as ebay hasnt bid enough for him

usually buy stuff off ebay and dont sell hence my lack of knowledge on this bit!