How could 1000baht be gone in 5 minutes, unless the man spends it with his friends on alcohol. I have seen it often enough in discos & bars frequented by bar boys.
Pattaya bar boys who have online profiles in gay sites are quite willing to give you a late afternoon visit for 1000baht or less, before they start reporting for work. It is a good alternative to visiting bars, provided that you like sex in the afternoon.