One Friday afternoon recently, about 50 fans and friends of the band String Cheese Incident took $20,000 in cash to the Greek Theater in Los Angeles to take a small stand against the system — in this case, Ticketmaster.

With money advanced by the band, each person had enough to buy eight tickets at $49.95 apiece for the group’s show in July. Once all tickets were in hand, almost 400 of them, they were carried back to String Cheese headquarters in Colorado and put on sale again through the group’s Web site — for $49.95.

“We’re scalping our own tickets at no service charge,” Mike Luba, one of the group’s managers, explained in an interview last week. “It’s ridiculous.”

String Cheese Incident, a jam band with a solid if under-the-radar following, wants to offer tickets to its whole summer tour without the service fees, now ubiquitous, charged by Ticketmaster and other vendors. To do that it is going through much more rigmarole than almost any group would bother with, but feels strongly that the effort is worthwhile.