Paid subscriptions only available for some usergroups

I have requested this hack without luck, so here it is what I can do.
Money is money and I don?t accept any responsabilty for this hack, use it at your own risk. I am not a coder, if somebody can improve it, great.

With this hack you can specify which usergroups can access to each paid subscription. If you don?t specify at least one usergroup the subscription will not be available. Remember to edit your previous subscriptions or they will be unavailable.

Thanks very much to MarcoH64 for his help with a difficult $variable

[bigcurt]

Yea Marco is pretty helpful, take care bud and great hack!

[rlamego]

Thanks! =)

[redspider]

can this be upgrade for 3.5.x series?

[mustang_lex]

This is a godsend!!! Thank you

[cavyspirit]

I need this for 3.5.4

[atxhorn]

hmmm

[SpreadingLight]

This is great!
Does it work for 3.6.8 pl2 ?