I think around $29.95 is going to be most peoples' palatable limit. I might be willing to pay more, but I worry they'd turn too many people away going over that. I also think 24/7 GM support would be too expensive. I'd be fine with 24 hour turn-around on tickets for issues on that server, with one second-shift GM so that they're on during the busiest raid hours. Guides should be able to field most non-critical issues.