Sorry,
I did not mean to imply that the value would increase. I am well aware that audio is not a hobby to make money on. I have a VPI 12.5 arm, so if I got another arm wand a second cartridge can be set up with proper vta, vtf, azimuth, etc, and then you just lift of one wand and replace it with the other. As for how many mono recordings I have, not that many. I would buy many more if I could get proper reproduction of them. There is a lot of great music that was only done in mono, and even many of the early stereo recordings pale in comparison to the mono recordings.