That's crazy! For that amount of money in Thailand I could train at a top gym for 2 months probably 3 months with the mouthpiece I have. That has to be the rip-off of the year next to the cabbies who wait for unknowing tourists to get off the plane and charge them 1500baht to go 4 or 5km.
If you want more 1 on 1, go to Thailand and train. But please don't go to Rawai Muay Thai. You will get great 1 on 1 once you show the trainers that your are serious and that you want to fight in one of the hundreds of stadiums.