Update.
My neighbor who purchased a 2008 IMac for $175 to run Abeldon on (and Garage Band), found out (we found out) that GB would not install.
After trying to find torrents of older GB to install, I came across a way to put Catalina on the computer thru a patcher with video instructions on how to do it by the patcher creator on youtube.
I did this, and we got GB on the IMac, but it was running extremely slow. My neighbor talking to the guys that sold the computer was told he should max the ram, and for an additional $20 they sold him the RAM.
While at the store, I was asking if they had old software for which thy could install GB on the system running El Capitan. They said they did not, but they could find a torrent. They also told me that they may get in late 2009 IMac’s this Wed, which can run High Sierra natively, and they are the same $175.
In the store they also told me they could get Catalina on the system thru a patcher.
Whew, we thought we would have to kill the patched Catalina if my neighbor ended up returning the computer, which is now running Catalina EXTREMELY SLOW, but runs GB just fine.
So, those guys said they would hold me a late 2009 High Sierra computer.
However, after installing the $20 worth of Ram to max out the computer, it runs just fine.
The guys in the store confirmed that when they do it, the computers run just fine, no problems.
Today, my Sponsee, who had gone to school for recording engineer, and has a lifetime Abeldon license, installed it on this 2008. iMac, running patched Catalina, and it is running just fine, in fact, it is outperforming both GB and Reaper on this system,
So, either way, I am going to get one, and either have high sierra with GB, as well as Abeldon, or do a Catalina Patcher to have Catalina on it, and have both DAW’s installed.
After a little training, and playing around, I should be up and running next week so I can record sound samples at lease.