. . . You are brand spanking new to this, aren't you? You basically just went up to the jewelry store owner, asked them to give you free jewelry, and told them you already came in and stole some rings that didn't fit properly.
You can't use "not having dollars" as an excuse, because there is such a thing as "currency exchange". Furthermore, not having a Walmart is pretty sad, but that has nothing to do with not being able to buy Terraria, unless you're attempting to buy a console or handheld version.
Let's say you find the game on sale for $2.50 USD. With the current exchange rate of 1 PHP = 0.021 USD, that's about 116.97 PHP--round that up to 117. You're getting the entire game for only 117 PHP--meaning no DLC, no subscription fees, no microtransactions. They've made the game just like older console games--the entire game comes with it, and you only have to pay once, ever.