When I got into Mini 14 / .223, circa 1977, I was able to pick through a crate of 10 and pick 2. I had 17 Ruger made 20 rd mags.
I paid $147.50 each which was about dealer cost. I later got into flash hiders, Choate folding stocks etc..
The first CAR 15 colt I bought was $300 +.
Guys I knew who were running Mini 14s hard went to CAR 15s as did I.
I had few problems with my 2 examples. If you like a Garand type action they are OK for light use.
As an minor comment on open top Garand type actions vs closed top actions AR, FAL, HK91 etc....
In the rain the open top actions throw a lot more water directly in your face.