Would y'all please advise me on the best way to unload some geeky collectibles?

I have some unopened geeky collectibles. Namely a Portal Turret and Half Life 2 Headcrab Statue (both from ThinkGeek). I need space and they have to go! Are there good ways to sell them or to find them a good home? Please help! Thank you!

Written by: dxdtea
Source: http://bit.ly/2uSeIiy