buyromaniac 

A combination of "pyromaniac" and "buy." These people are obsessed with buying things, just like a pyromaniac is obsessed with setting fires.

Buyromaniacs are out in force on the day after Thanksgiving.

buyromaniac by Ae5Ea8 February 7, 2015

Byromania 

Byromania is a manic passion for Lord Byron's life and poetry. Many unfortunate souls suffer from this affliction to this day.

He's purchased a bear, a half-sister and a flight to Geneva. I think he has Byromania.

Byromania by john keats' burner account October 11, 2022