Is there any Hope?
Unfortunately, very little at the current time, other than the two R2's you already mentioned...
We've yet to see Medicom show any preponderance for "rehashes" ala Hasbro (other than the even more expensive Chase and carded ones). Chewbacca fans are having the same problem right now, since he's only in the Early Bird set, and I've not once ever seen someone breakup one of those and sell the figures off individually.
Wish I had some better news for ya'
buffet, but that's unfortunately one of the things about this Kubrick line that collectors have to realize and prepare for: it ain't easy, and it ain't cheap.
From the looks of it, most of the HTF piece's prices are stabilizing, if not going up a bit more. So there's a good chance that the longer you wait, the more expensive these little suckers are gonna get.
Good luck in your hunt. Maybe you'll stumble on a real good deal somewhere. Keep your eyes peeled on this thread though, 'cause a lot of us (even if we're all caught up) still browse the Kubrick auctions and point out good deals when we find them...