Am looking for some advice on billing systems (obviously!)
Aside from enabling invoicing etc. for web hosting, we offer a subscription based service and would like to bill for this. It's a recurring charge and not based on web space\bandwidth\etc. We don't need to set-up any user accounts in WHM\H-Sphere or anything like that. Just regularily bill\invoice them for the subscription they've subscribed to.
I've looked at PerlBill and a few of the others mentioned here but would love some advice on what the people here have experienced.