The basic bones pledge has 168 bones figures for $100. The revealed goals bring this to 180. Plus Sophie in metal, and Mr. Bones with your order (I don't count him with the other figures because you only get him once per pledge, not per Bones order).
All optionals for Vampire and Undertaker:
An additional $170 for six giants, six dragons, two demons, three mythos monsters, two driders and a spider goddess, a remhoraz/frost wyrm, an earth elemental, a tree spirit/ent, an ettin, an ogre, and a gnoll. Including the revealed goals, this climbs to $187 to add a Jabberwock, three Tiiks, the beast of blood reef, and the sea lion.
All optionals open to everyone will cost $122 for 48 jars of paint, twenty orcs, and a 150 mini case.
Buying everything revealed (since we know we're not stopping at one million) will cost you $409. That will buy you 200 regular pieces, thirty larger pieces, 48 paint jars, and the case.