[aPoCoMiLogin]

https://recurly.com/ maybe, I can't find this in their pricing page, but from what I know it looks like this: revenue fee 0.500% transaction fee $0.08 and selected plan (there is free one); with your volume that would be around $3.2k a month in fees.

[aPoCoMiLogin]

also you need to include the payment gateway, like authorize.net ($25 month, $0.1 trancastion) or something else