I have figured out how to go about it, but the mod needs polishing. In many cases the scan crashes the game hard before the actions can be saved making you redo it. Edit -> purchase -> reset -> edit loop works most of the time untill you rank up. You can even edit discount store prices, but its highly finiky and hard to pinpoint the adresses without having the game crash. Its a pretty good take, but reversing cost would be more user friendly aproach without having to fight off constant crashes.