Would you buy an established self-sustaining GPT site?

Tweet

Would you buy an established self-sustaining GPT site? This idea to make this discussion came to me after reading about someone saying that Microworkers was for sale and their ridiculous asking price of $10,000. My thought is, would you actually buy a site like Neobux, TreasureTrooper, or etc. if they put their site up for sale? What kind of price range would you pay in? At what point would you consider a GPT site "established"?