So I have a nice contract infrustructure set up. I have an webserver that interacts with it and provides web pages to my users. I do not want to deal with PayPal\Credit cards myself – I want to have some intermidiary service to get funds from users cards and transfer them (after commission) to my contract payable.

So the logic would look like this:

1. User wants stuff,
2. User clicks Pay,
3. User gets transfered to Card\Payment page of the intermidiary service
4. Intermidiary service calls my contract on the blockchain with my payable method
5. I see the transaction and provide goods to user.

Are there such Intermidiary services already out, are there any with at least 100-1000+ user base?