PaintAmerica will be sold easily , as ruzeen said , lot of endusers for this domain.
It's pretty rare that any domain "will be sold easily". Really, it's up to one of those end users to (1) see your email, (2) see value in the domain, (3) be willing to buy it, (4) agree on a price with you, (5) actually pay. Between the domain and the sale, a lot of things can fail to happen.
That's always true. Easy sales are the exception, not the rule. The only truly easy sale would be an ultra-premium domain that is so undervalued it sells instantly. And that's not really what you'd want as the seller either.
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PaintAmerica.com is a great brand name for somebody. It should eventually sell. How much? Well, that depends on your buyers. How interested are they? What kind of budget do they have? How much competition is there among them? And how patient are you -- willing to wait a decade or hoping to sell before summer?
Anywhere from $500 to $15k. But it might end up toward the low end.
If some company in the gaming industry wants those other names, they can afford to pay more than someone who will be buying PaintAmerica.com.
As for the adult domain ... adult webmasters are skinflints. You might get a $xx offer. If you get more than that, count yourself lucky.