You can get a 100% cashback (capped at max ₱100) when you buy Steam Wallet Codes with your ID and Selfie verified Coins.ph wallet. Offer is only valid from April 25 – 30, 2019. Here's how you do it:

Step #1: Open your Coins.ph app and tap on ‘All’
Step #2: Select Game Credits
Step #3: Choose Steam Wallet
Step #4: Select the amount you want to buy then tap “Next”
Step #5: Enter your recipient’s mobile number (Philippine mobile numbers only)
Step #6: Slide to Pay and that’s it!

If you do not have a coins.ph account just register under me here, to get freebie!: