It sounds like you're suggesting owner financing? I think either way there will be financial risk.

You pose great questions around making sure the business is doing well and still trending up. Based on the little info I got, it appears that way. What was weird to me is it seemed like an American business with all the text in English but almost all of the clients were from India. I'm not against overseas customers, I just expected the site would be in another language. Maybe English is the common language between their dialects?