No s@#t - Steely Dan at Chastain for $100!!! And the seats were not that great. I think I payed abut $50 (scalped) a few years earlier for 12th row dead center at the Omni.
I guess these "old" guys are trying to get ready to retire 
I reasoned that the shows are so complex these days - like a studio on stage really - the sound is so precise - maybe it costs alot more to do those. All those apogee converts and Sony 48-track machines Roger hauls around 
I remember reading that the Floyd shows back then ( I saw 'em in 77 at the Omni for the 1st time) were so expensive to do, that they barely broke even or lost money.