Prices on Mandarake can get pretty scary 
sometimes... much higher than the same item 
would go for on YJ or from a dealer.  For 
example, a while back, they had some RahXephon 
sketches from the same sequence as two that I 
won on YJ; the difference being that I paid 
about 1/10 of what the final price on Mandarake 
ended up being.

So don't give up hope just because one site 
attracts scary bidders.  *grin*