If you want a quick and very cheap escape (for only Php 9,000), Taiwan is the best place to be. It is a place to feed your stomach with great food, to feel serenity in your soul and to fill your mind with rich culture and learning. Taiwan might not be on top of your list to visit. Neither I too when I was still starting my backpacking hobby. I just love the laid-back feeling on a bustling metropolis.
If you are planning to go to El Nido and have some island hopping tours and beach bumming, Php8500 is already okay for 2 persons for 4 days and 3 nights inclusive of transfers.If you are planning to go to Puerto Princesa to see the famous Underground River and hop on for Honda Bay Tour, Php9000 for 2 persons for 4 days and 3 nights will make you survive.