I was still 15 for another month. I had bought a Yamaha FG75 from a buddy who needed money getting to Alaska, $75 for the Yamaha, with case that kept it in nice condition as I went on a walkabout throught the Southwest with some other folks, spent the winter in the Four Corners Farmington NW winter of '76-77. Played that guitar all over the desert. My first guitar, first love for a guitar.
I think my favorite guitar receipt is from 1980 or so if I can find it. My later very good friend who went on to own his own vintage store, gone now RIP Mark, wrote me a receipt while he was manager of a Music World for a Blonde '63 Fender Reverb Unit for $75? Nobody was buying these back then. I wouldn't be surprised if the receipt was for less.