I've had several of the 45's. Which rack design do they have in them?
Call natureform, they can tell you how many chicken eggs it will hold when converted over. My current 45 holds 5,000 quail eggs.
I also have a 125 model so double the the capacity of the 45 unit.
the noms are a very nice upgrade over the sportsmans. Have the guy plug them in and run them up to temp and see that they hold. You are not getting taken at that price. I think your post must be a 'brag' on the find you have there!!! If you don't buy them, send me a PM of the contact info of the person selling them and I'll go get them