You pay them for sex. You can still get it for 1,000.Baht. If you pay for travel costs and food (which they would have to do themselves after short time), two f...s per day should get you a discount and total costs amount to s.th. like 1,600 USD. But: I bet most customers (considering their average age) do not have 60 f..s per month with the same woman. So it's a bad deal. Not to mention the other amount given in the article.