150 against amount balance customer describe determine download help method pdfs prepaid re-up run situation solution support unique

I've got a unique situation and am trying to determine if e-junkie could be my solution. What I need to do is enter an amount (say $150) that a customer has prepaid. They can then download pdfs against that balance and re-up once their balance has run to $0.

Thanks for the help!

Sorry, we have no method to support what you describe.