Andy,
I once saw Rose Royce, The Real Thing, Sister Sledge and Odyssey for a tenner at Fairfield Halls, Croydon,.....but paid over £20 for Shakin' Stevens same venue ( Mrs bear likes him and forced me to go....really!) so what a difference in quality, eh?
I wanted a refund from Shaky, but he was entertaining to say the least....and his fans are mad about him, some even dressed up like him, which was rather amusing in the bar.