Of course, if you decide to register your son through one of my partners, things will be different: You will need to pay them 3,720 USD (payment has to be in US dollar and you must pay the bank charge) and your son will need to pay 21,340 Pesos here in the Philippines (payment has to be in pesos). If you pay the school directly you just pay 150,000 bahts: no bank charge taxes for exchange rate.