Aphex Twin AKA Caustic Window, Caustic Window
Aphex Twin used the name Caustic Window to record the eponymous album. However, he opted to abandon it after making only 5 copies. It was a good thing that one of them got out anyway. The record was seen on Discogs in 2017. The starting price was $13,500! In the end, the record was bought by none other than Markus Persson, the creator of Minecraft, for $46,300.
The Beatles, The Beatles (AKA “The White Album”) (1968)
The album in question here is the first pressing of the 9th album released by the Beatles. This particular copy has “A0000001” for its serial number. Rumors were going on for years that John Lennon had the copy. However, the truth was that Ringo Starr had it! The copy was hidden in a bank vault for 35 years and was sold off for a stunning $790,000 at a charity auction. If you are lucky enough to own a copy with a low serial number, you might be in for $13,750.