Welcome to TSD. I find this community to be very friendly,warm and knowledgeable. Enjoy to the fullest.
Probably the best value shave shop in Thailand is "Man Of Siam" Have bought a few things off them, and they try to keep their prices as close to what you would pay back home. They are the Muhle distributors in Thailand and have a great selection. They also have their own shaving soaps and are very highly rated. I've used them and they are great. If you are in Thailand you can find them on the net under Man Of Siam