Probably not huge amounts, but I believe the band members get an ok-share..? I mean, Steve alone should make the attend rates at those shows quite high and while not terribly expensive, it's not like the ticket prices have to be super low either, again thanks to Steve. No way they'll get too rich with British Lion gigs, but it's probably not strictly hand to mouth business either.
Then again, I know nothing about these things, just pondering..!
Some of the venues they are playing are very small. The Craufurd Arms in Milton Keynes has a capacity of 250!