Ok, and you do not you consider Multi-account, or so-called multi-room on cardsharingserver.com?
Some competitive servers have this. If you buy subscription, you can choose how much receivers you have at home and the price ist for example:
1 receiver - 3,90 EUR per month
2 receivers - 6,60 EUR per month
3 receivers - 9,30 EUR per month
All connections shall be made from a single external IP address, i.e. all receivers shall be physically connected to a single router (modem) of a single provider.
I think that cardsharingserver.com is super server and Multi-account, or so-called multi-room is one thing, which could your services for users make little bit better.