domain Online mall names - please appraise.

[cauchyResidue]

mallosaurus.com
mallasaurus.com
mallfanatic.com
mallgroupie.com

I think the names are catchy and could possibly be branded, especially the dinosaur ones.

I would like to put them for sale here, on Ebay, and Google Base and I'd like to know what is fair to expect.

Regards,
-cR