Not a concert but my cousin and I attended the Gilmour auction @Christie's in NYC on Thursday. He plays in a Floyd cover band. We each had a paddle but it was an impossible dream. Had our eyes on a few items that we thought we could bid on even if they exceeded (low) estimates by 5-10x. Everything sold for 10-100x estimate! I was eyeing a lap steel estimated at 1-2k and it sold for $300k! I was hoping to be in the running for around $10k. Dreamer.
The day before we attended the viewing and got to see the over 100 guitars. That alone was pretty fun. This auction really set a new bar for guitars (and amps and guitar cases!).