I sold my Dragon and my Close Encounters to the same person as a package deal last winter. I think I got like 1100 or 1200 out of them together. Both about same condition as yours etc.
So your prices are good.
How are you advertising them?
Selling anything is the same anywhere. Its a numbers game. It will take XXX amount of views to generate XX leads.
Also who are you trying to sell to? Your target audience is going to be newbies, first time buyers etc. People just getting their feet wet. Those people dont hang out on pinside.