This is to be used with TamperMonkey and it’s tested working on Edge and Google Chrome: Google Play Redeem
How to use: Enter a fake 16 character code. The 4th character is the most important part.
Example: XXX[0-5] XXX XXX XXX
Any character besides numbers 0-5 = $25
Lets say I use this code: ADF3 FEWF LQPO FEW2. The result will be $300
Or lets say I use this: 0ER5 032F GFDS GRE2. The result will be $500
One thing to note is that in order to enter another card, you have to refresh the page.