I don't know but my personal speculation is that it isn't 510.00.
It's 510.00 right now on an auction that closes in eleven days. We have no way of knowing what Boo-Boo's max bid is - might be 510.00, might be 1,510.00. No way to know until / unless somebody else gets into the fray.
Good luck.
OTOH, if you're Boo-Boo and you actually get it for 510.00 I'd estimate you did OK.