This travel agency is on Adriatico in the Malate area, the more or less center of the backpacker universe. This company has about 10 agents so who know if they would return an email. There is an exit fee of about 10 dollars US, and maybe another 10 dollars U.S to add to the cost, so add 20.
This is an obnoxious country like the US where the cost of a ticket is cheaper to buy roundtrip, and a one way can be very costly.
NOTE: The prices are for a guideline and not for use, the date of this posting is important.
NOTE: I have learned that you can extend your visa on the Islands of Baracay or Palawan by going to a travel agent and paying 40 Dollars for I think 38 days.