It is nigh impossible to get reasonably priced second hand goods here especially from a Filipino, they over value everything they own, Cars are a prime example a clapped out 20yr old banger you can buy in UK for £500 they would ask 4 times that price here.
Likely you will be forced to buy new as you are already finding out? never buy an old second hand Fridge or AC unit they are worked to death here, plus the modern units tend to be much cheaper to run than most older models. Have a look at cheap Bamboo furniture treat it with an anti termite solution and that will be good for starting out.