Variable Credit Usage PER pickaxe

I am trying to buildout a studio with multiple pickaxes..

Pricing model for the studio is the following:
5 credits for registration
One time 25 Credits @ $50
OR $99 monthly for unlimited credits

What I would like to do is have certain pickaxes use up 3 credits..
Some use 2 credits
and most use 1 credit

in other words, you buys CREDITS for the use of all pickaxes in the studio but each pickaxe is worth different credits…

is that possible today??

let me know,


Uri