I think these numbers are pretty telling.

Announced attendance at team USA's elimination game last night vs. the Netherlands (starring Derek Jeter, Roy Oswalt, Kevin Youkilis, Jimmy Rollins, David Wright and others): 11,059.
Tickets were available on ebay for $20-30 each.

Announced attendance for the Red Sox vs. Orioles game earlier that afternoon (with such players as Oscar Salazar, Brian Bass, and Gil Velazquez getting starts): 7,915