Never heard of it, but it seems interesting.  I
signed up with Rinkya, but the fact that I would
be paying $63 in fees for an $8 cel is kinda . . .
well . . a turnoff.  So I just stuck with Celga.  

As far as wish list cels, my most recent one is a
Big Convoy cel from Transformers Beast Wars Neo
(believe it or not!!).  I got it from YJ for VERY
cheap (ended up being $1.65, I think after all the
fees).  This is a 2 layer cel with the top layer
being a special effects layer.  It came with about
6 or 7 drawings/gangas and the original timechart.