In the Sixties, you could purchase a ticket to see The Beatles live in concert for $2.50, $3.50, $4.50 and $5.50. With inflation, that amounts to approximately $19, $27, $34 and $41 in present day. To. See. The. Beatles. Live.
If you ever feel guilty about getting your friend a bad birthday present just remember that for John Lennon’s 21st, Paul McCartney got him a Hamburger.