Tip: If you make a change to your ROM that you regret, just go to File > Restore > Restore ROM to Previous State in the menu. From there, you can select a restore point and revert your ROM to a previous state.
This block will allow you to stop a player from advancing until they have enough coins. You can change the amount of coins and if you pay once, all other blocks in the level don't require payment. You can also change if the player gets a powerup after paying for the first time. Please enjoy my block, and read the Readme.