You can find online store that sells iPhones like iPhone 5. It's http://hasloo.com/shop/?product_cat=phones-gadgets . This site has local customer service and ship the phone from Hong Kong. Hasloo.com was existed since 2006 and has good reputation when it comes to selling digital goods. Now it sells tangible goods like phones, laptops, and tablets.
The center of various products to be bought in the area of Paco, Manila is the Paco Market near the church and Pedro Gil. It has raw foods and materials for cooking, utensils, drug stores and banks. People can go to this area for many purposes like money exchange, buy shoes or slippers, eat and dine in wide arrays of fast food and restaurants, toys and clothes and school supplies. It has also hardware materials, furnitures and glass materials customizations. To go here, if you in Taft Avenue, ride a jeepney in Pedro Gil. If you are in EDSA just look for a ride in Guadalupe with a sign board of Paco and Taft. There's also a ride in Kalentong, Mandaluyong.