It looks like you haven't bought these yet. That's good.
I don't see much commercial value for any of these names, and I'm not sure who your buyers would be. Especially when you consider that a potential buyer could go hand register several other similar options instead of paying a premium to you for the names. As such, I value them at reg fee.
If you were to find a buyer (end user), I would expect to get something in the low three figure range, tops. Just to give you an idea, PostSecondary.com sold for $192 last year, and that was the .com. The .co would have much less value.