Cryptos and books looks like an original communion!
Max supply is quite big, so a collateral of 150K is understandable.
Will put a few bucks in this one, is there any shared MN already in the game?
The amount of coins is required because of the various functions that the platform will have in the future with the use of the currency to pay for the services, everything was very well calculated and we reached this amount for the viability of the project.
As for the masternode, at the moment only has the complete masternode that is with a very good monthly income.