I've been in demo rooms that priced in about $100-300k (~2015 dollars), and those sound remarkably close. Not all sound/bands can be reproduced, and it really depends on the recording. Could you do it for less, also? Probably. But it was pretty fun to hear the highest end.

My 500$ KEF Q150 setup sound like the band is here when I close my eyes. The sound will be shaped more by the acoustics of the room than by the actual speakers anyway.