I ended up posting these shifter knobs up on Ebay at NO RESERVE. The auctions started at $9.99 each. All auctions end tonight at 7PM Pacific Time.
I am offering free shipping in the US and $5 off international shipping to paid members.
Here are links to the listings:
Mustang Knob:
http://www.ebay.com/itm/352403879709
Saint Christopher Knob:
http://www.ebay.com/itm/352403936403
Cougar Knob:
http://www.ebay.com/itm/372367144519
GTO Knob:
https://www.ebay.com/itm/372367150516
Firebird Knob:
https://www.ebay.com/itm/372367214428
Camaro Knob:
https://www.ebay.com/itm/372367223216
Thanks and good luck,
Jason