You mean with my own money?
That would have to be "Lost and Found" and "Performance: Rockin' the Fillmore" by Humble Pie - both purchased at the King Soopers in Evergreen, CO. c. 1972.
My folks were pre-boomers who hated rock and roll, so I had to wait until I was old enough to get a job to buy records (and guitars, amps, etc.)
Purchased "Wind of Change" and "Frampton's Camel" by Peter Frampton for ~$3.50 each at a head shop/record store called "Cinderhead" in Cinderella City (anybody remember that place?) in Denver c. 1973.