Around 1973 I bought a new 2.5" model 19 for the grand sum of $170.00. This was my daily carry for many years. The factory supplied magna grips dis not fit my hand at all, but with a Tyler T grip adaptor it was excellent. I loved that gun an much regret selling in a fit of stupidity. I had that problem quite often when I was young. I see there are currently 2 WTB ads for these adapters on this forum. I seem to recall that years ago the original maker was not able to supply them and someone else (BK?) started producing a like product. Then the original maker started selling them again. I see both have a website and list the adaptors for sale. So why the demand for used ones?

I just looked at the prices-Wow! When I worked at a gun shop in the mid 70s we sold the Tyler grip adaptors and trigger shoes for $2.95 and $3.95, IIRC.