"I bought hostdome.com for $50 dollars"
OK. Here's what I'm getting at ... and thank you for the response, by the way!
Now, you mentioned starting a web hosting company with the domains. So, "(b) how much people would pay for them" is irrelevant ... right??
And, "(a) if they are good" can be surmised from the purchase/sale (by Tippy for $50.00). Why would Tippy sell it to you for $50 if it was worth more than that?? Hope that provides some insight. Good Luck.