A few facts on the business. There is no inventory to buy. There is no selling. There is no office. There is no maintenance. There is no ongoing customer service. And they've NEVER advertised. Not one thin dime has ever been spent on marketing. (now I don't know why they haven't advertised, because I think it would double the business, but they just haven't)
Oh and they're only open for business 2 days a week. Yet it has provided a net profit of 200-300k year in and year out for more than 2 decades.
Anyone care to guess what the concept of this business might be? I will reveal it after a few replies.