I'm a developer, actually creating a game on unity if i made this game id lower the RP prices, 1k gold for a SINGULAR RP is expensive, if you lower it from 1k to 100 gold for a singular RP because then the RP s too easy to get. You need to be in the BILLIONS (at where the game is at) to get a lot of RP by lowering it by 900 gold, you could be at 100k and might turn a profit (maybe even 10k) if you play it correctly! Raise it until you're happy with it. To me 1k gold for 1 RP is too much id say lower it to 500 gold for 1 RP. But i do see the bright sides of having 1k gold for 1 RP, 1k gold for 1 RP means that they (The player) needs to strategize what to upgrade and what to spend their RP on. TD:DR 1k gold for 1 RP is too much, 100 gold for 1 RP is too low, 500 gold for 1 RP is about right (Not too much nor too little).
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If game reload doesn't help, please PM me.