How to profit from MCProhosting credits over 1500$

[singonator]

Me and my friend have  discovered various methods and we came to the conclusion it would be easy to get over 1500$ worth of credits in MCProhosting and we would like to calculate or aproximate how much % of the 1500$ do you think we could profit? Like could we get 1000$ for all that? or 750$? Also if anyone is interested to help profit and earn a %