I just found out about the supercard team's new flash card the supercard ds two, the thing that interests me is the GBA function and the real time features, but I have acekard2i so is it worth spending $50- $60 just for the cool features?
Anyway, it's not out yet, and as far as I know a price hasn't been set. It might not be as expensive as that (but it probably will, what with the on board processor etc).
As of now, it's $39.95 USD on http://shoptemp.com/ Not sure about other places, but it's pretty pricey.