I haven't dealt with Celga before, but I really 
don't think he would have anything worked out 
with the seller.  He does advertise Celga's 
service on quite a few of his auctions, but I 
think that is to help out anyone who would be 
interested in the cels but does not have a YJ 
ID. :)

Like another posted, sometimes sellers at YJ 
close an auction when it reaches a level they are 
happy with. I've had it happen to me before.  
It's nice when you're the winning bidder, but can 
be hard to understand if you were planning on 
bidding towards the end of the auction. =/  I 
have learned that sometimes it *is* best to bid 
early on YJ, just for that reason. It seems to be 
a lot more common then on ebay.