Take a short trip to one of the neighbour contries by air and come back by air and you will have 60 more days at the airport. I recommand Vietnam and Saigon District 1. Cheaper than Thailand also..
Something is cheaper,something are more expensive. Tings that are cheap in Thailand can be idioticly expensive in Philippines because it needs to be imported . It also depends where in the country you buy it ! I was in Boracay and experiensed extreme high prices for everything. The more tourists,the higher prices...