Where can I buy a cheap PS2 Slim here in the Philippines?

Please answers. I want it sooo badly!!! I miss the good old days of PS2 and I have to admit I have a PS3 but PS2 is just really different to PS3 when PS2 used to be one of the best video game systems out there. How much is it right now? I checked at DataBlitz Marikina and they said it is Php 6000 but some people says that I can buy at Greenhills for around 4000-500 Pesos is this true? Please answers. Oh by the way, how much is the chip modding of a PS2 or is it free from where you buy it? Thank you so much!!! :) I will give 5 Stars. IN LUZON AREA ONLY SPECIFICALLY AROUND NCR because I live in PASIG.