I seem to remember the original Tyler T-Grip adapter at about $2 back in the mid-1970s. Advertised in every issue of Guns & Ammo magazine, which cost me about $3 per year delivered to my house, which cost me $17,700 in 1973 complete with an attached garage for my 1974 Ford 1/2 ton pickup that I purchased for $2495 at year-end close-out sale. Gasoline was still about 29 cents per gallon. McDonalds hamburgers had jumped from 15 cents to 19 cents each. A company called Amana was trying to sell their new Radar Range microwave ovens for about $300, but most of us weren't ready for that just yet. A new Sony Trinitron 19" color television was also about $300, but most of us were still watching black and white (with rabbit ear antennas). I got a big salary boost in 1974, from $657 per month to $759, but the Blue Cross-Blue Shield family insurance plan went up $55 per month at the same time. Montgomery Ward and Sears Roebuck were still printing and delivering their catalogs, and you could order just about anything you wanted; lots of great entertainment leafing through the pages and wishing I could afford all the goodies.
Sorry, I am easily distracted!