i feelTarrifs E/f/g/h should give more black gems
The more purchsed the better the deal should be as you are gaining large sums of money
it keeps ppl happier otherwise they might as well just buy small amounts.
I also think you could do more options for bg bonuses
like where you pay for 25% more production or stuff. have an option where you can also do 1month/3months and make it cost better for longer.
so if it cost say 50 bg for 1 week of soemthing maybe make it 150bg for a month and 300bg for 3 months
just some ideas to intice ppl to spend big with you and stick around longer after the commitment
hope you understand what i am saying if you need any help with it let me know
