What's a colony worth?

[FreakonaReef]

I've been thinking about clearing out a few colonies and not sure what there worth. There large fist size and bigger. I know what a frag goes for, but what about colonies?

Orange Digitata
Green Slimmer
Joe the Coral
Orange monti Cap

[Nanook]

Gauging prices threads not allowed. If/when you decide what to charge feel free to start a thread in the selling forums.