The gemini gems website has as complete a listing as you will find on Gemini's for sale worldwide.
Gemini Gems - Classified Ads is the free, non-member classifieds page.
a 1991 3200 for 75k
a 1995 3400 for 72k
a 1996 105 for 87k
It goes up from there.
Bamboo, Hull number 161 is the only one to my knowledge that is in your price range, here is a picture - and you can see why it's in your range (asking is 32k) (PM me if you want contact info, boat is in Paradise Texas and comes with a trailer):