Yes, you can use Epoche, CCbill, or any other billing company that supports background posts. Then you can change some code on X-Cart, VantageCart, or OS Commerce (anything you have some access to source code).

There could be one limiting fact.. CCbill can only do "membership" amounts so you have to create an account for ... say... $1, $5, $10, $15 ... you can't have the shopping cart send just any dollar amount but it has to match what is in the system.

Epoche is more or less the same.

We ran into that when doing the integration for moviequickie.com (they use Paycom/Epoche) and also thinkmen.com (they use ccbill.com).

But we have also done off the shelf shopping cart integration and know it can be done.

Not to hard and the billing company may be able to give you direction on how it works and what variabled need to be passed. Or..they may now have an API.

If you are selling "real" products you would be better served using an adult merchant account and pay 5% or less... as CCbill/Epoche and others can change 12% - 15% based on the volume.

If you need an adult merchant account contact me and I'll give you what we use for boysinc.com.