If jonnieb was posting I'm sure he would say something like "and I've got a bridge in the Arizona Desert to sell at a fantastic price". While you say you can afford it you can look at it another way.
For 15,000 Baht you could probably have a short time with 10 different ladyboys in Bangkok, 15-20 different ladyboys in Pattaya, and short time means around 2-3 hours and at least coming once. As other forum members have commented, you could also make a trip to Phuket to spend time with 2 lbs in Tootsie's Massage for probably a bit less than 15,000 Baht including the airfare.
So, you can experience 2 lbs for 4 hours at 15,000 Baht - with no way to check if you have chemistry with them, or you can possibly do the above.
As they say so often in Thailand, "up to you".