Authorize.net Payment Option For Paid Subscriptions/User Upgrades NOT just Paypal

This plugin works perfectly for my need to make one-off purchase since our user upgrade is life-time.
We may have ARB some point in the future but then, hopefully there will be other options to use.

Lancer4hire, I would love to see a Paid Subscriptions add-on for xF like you did for vB. I loved that plugin and to have it here would be great. If you even do port the plugin over please let me know. I would not mind beta testing or purchase...