Need help on a fair selling price pt2

[xernex]

Ok guys, running out of room in my tank, and my acans are going since I have a wellso coming to take their place... what would you charge for these:

 

 

20+ heads on it, aprox 2x3 inches just red and blue acans

 

I don't know what they cost me, because I bought out a whole tank from someone and they came with it, else I'd just look around the same price