Being from Boston I've been to Fenway quite a few times, as well as the Pawtucket Red Sox stadium, which is the AAA affiliate of the Sox.
We got a pair of tickets behind home plate, about halfway up, for about $20/pp which in Fenway would have run into the hundreds of dollars. The big difference is that there's so many little games or things going on to keep people interested, it felt like a minor league game, but with very good baseball being played! I loved the little trivia contests they showed on the big screen, as well as that the mascot came around a semi-regularly. Coming from Fenway it felt weird to actually feel like the team was happy to have you there.
I found the food and beer to be more expensive than I'm accustomed to, but not so much so I was upset.
All in all, had a blast here and kinda wish we had this stadium in Boston.