Minecraft Gift Code? Where can I buy this near Metro Manila?

I'm having troubles about Minecraft: Where can I buy the gift code needed for the registration? (I don't have a credit card and I don't think my parents would let me borrow their credit card, I've already told them it's a friendly community game but still they won't let me. That's why I can only trust the gift code.) I can play Minecraft but it's not accessible to Multiplayer, which is my main reason why I want to play Minecraft; Hunger games, Crafting Dead. If you're a Filipino citizen near Metro Manila could you tell my where I can buy the Gift Code?