Just looked over ebay, found a ton of items. Including rare ones.
Ecto Bomber - Mint in Box!
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3153649517&category=16463
Green Ghost
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3152686822&category=16463
Ecto 3
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3152785945&category=16463
Ecto Bomber - Loose
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3152838158&category=16463
Winston Zeddemore - Power Pack Heroes
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3152838429&category=16463
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3153663730&category=348
Ray Stantz - Power Pack Heroes
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3152838796&category=16463
Louis Tully - Slimed Heroes
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3152858784&category=16463
Movie Monsters - Quasimodo & Mummy
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3152865091&category=16463
Ecto 2
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3152840058&category=16463
Jainie Melnitz - Super Fright Features
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3153183310&category=348
Ecto 500
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3153427475&category=16463
Janine Meltiz - Fright Features (UK)
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3153001387&category=348
Peter Venkman - Fright Features (UK)
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3153002746&category=348
Gobblin Goblins
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3153658421&category=16463
Peter Venkman - Slimed Heroes
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3153659988&category=16463
Movie Monsters - Wolf Man
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=3153664149&category=16463