I have used Rinkya on several occasions and would
recommend them.  The bidding system works rather
well and they ship your items fast.  They have
also been very prompt when I have e-mail them with
questions and concerns.

The only gripe I have is they way the system is
currently set up.  If you win several auctions
within a short time period, you need to either
e-mail them for a total or pay each one
individually.  This can be a pain if you win a lot
of auctions, but they are supposed to be fixing
that sometime in the future though...