1. Wyse - not worth much as a board, especially since it has broken caps. The switches, depending on whether they're old, "vintage," or new blacks can be worth up to $0.25 each if desoldered.
2. Dell AT101W - should have Black Alps. It's in rough shape, so I wouldn't put it at more than $30 shipped, probably less.
3. Junk
4. Commodore with beige tactile NMB Hi-Tek switches. Uses a proprietary interface, so it will require some work to make it work on something else. I just paid $25 shipped for a PS/2 board with beige Space Invaders. I wouldn't put it at more than that. It's really worth more to you as something interesting than to anyone else, especially considering shipping costs.
5. Packard Bell with, I'm assuming, linear White NMB Hi-Tek switches and missing caps. I wouldn't pay more than $25 shipped for it. Caps are hard to find for NMB boards, so that's a major ding against it that it's missing some.
6. Old logo Dell AT101. Based on the model number, it should have the less desirable Black Alps; however, it may have one redeeming trait if it has the dyesub PBT caps. Some might pay up to $50 shipped, but I wouldn't pay more than $40. That's all contingent upon the caps being dyesub though.
7. Should be an RT-101+ with beige NMB Hi-Tek switches. I'd say in the $30-40 shipped range, maybe up to $50 if you clean it up, it works, and someone really wants it.