Cumulative pricing in the store is not working. This is where if you buy a rank any following ranks have the already spent amount subtracted from the total. I.E You spent $5 on Rank A, Rank B cost $10 and Rank C cost $15. This would change the price for Rank B and C to $5 and $10. I am currently working on figuring out the fix to this. If you happen to want to buy an upgrade, DM BladedNarwhal on Discord or in game and I will get a temporary product made to get you the discounted price.