@baiteh @anon_opin agreed! I've seen some really good tribute acts.
Ultimate Madnezz were let down by their warmup act, so they did an impromptu set of non-Madness songs, before going off for ten minutes and coming on again to do their intended full set of Madness songs. Seriously impressive musicianship, stamina, and showmanship.
And £20 in a local club is a lot more affordable (and accessible for me) than £100+ for big names in big venues in a distant city.