I happen to have some of the stuff you are looking for, however some of the figures, I do not want to seperate from their accessories.
Here's what I got:
I do have an extra MOC Quarry, but only if you are serious.

I have a very rare error where Mutated Don was put on a Baxter Robot card. Once again only if you are super serious.

Can't help you with the Alien Hunter Buzzrok or Alien Hunter Multiflex, I want them too.
I have a complete loose Foot Fire Mystic w/staff, but will only sell it complete.

I have a complete loose Paleo Patrol Triceratops, but will only sell it complete.
I have a complete loose Comander Mozar, but will only sell it complete.