There's been a pretty strong upward surge in the price of most of the carded Droids and Ewoks figures over the past year. I'm down to needing Logray and Wicket for my loose collection. In that time I've watched them climb into that $30 range you mentioned Jason. I don't know why, surge with ROTS popularity? It's been frustrating though because even though they're neat, I don't think they should really be commanding the prices they do, though that's only my opinion.
The Fromm's, 3PO, R2 and Kea tend to generate the higher prices among the Droids, while the rest can be had often for under $30. Ewoks are really variable. At times you'll see Logray go for $15 on a very nice card and then the next week for $40+ on a card not all that much nicer. It's weird and frustrating to say the least. Loose are commanding the same price pretty much too, at least with the Ewoks. You can find Droids loose for fairly cheap with the exception of the above mentioned ones. I picked up most of the others in the range of around $10-15 loose with weapons.