This seems like it could be the perfect thing for the band to be doing, which so many other already are. Offer the chance to purchase a recording of the concert you just saw or just missed. We've got members on this board from far away lands like Ukraine and Argentina, why not give them a chance if they might never be able to attend a live show to have a piece of one without getting a shitty bootleg.
Maybe they are available somewhere and I'm missing it. I also don't know the cost of producing vs the profits from selling and how many people would purchase the recordings, but it seems like it's a revenue stream that other bands are now tapping into. My cousin bought the recording from a Metallica show we saw in October and it was really good...we were listening to it on the drive to the STP Hamilton show.