Too young to have been buying music in ‘72 but I have bought a few of them over the years, still have them in either LP or CD format;
Bowie - Ziggy
Jethro Tull - Thick as a Brick
Deep Purple - Machine Head
Lou Reed - Transformer
Deep Purple - Made in Japan
Alice Cooper - Schools Out
Uriah Heep...
Ziggy made the top 10 at least, Clear Spot didn’t even make the album sales charts in the UK, and probably didn’t in the US, but it’s a well regarded album that makes it into a list like this.