Frank,
Take a walk into your local sign shop and ask if they have an old cutter hanging around?
Some shops usually do, the reason, because they don't want to sell them to someone that may use it to compete with them.
Explain what you need it for. There are plenty of shops you can try, or just make a call.
You might get lucky.
I've had cutters for well over 20 years because I have a sign and graphics business. Go to the Vendor's corner, I'm CFC Graphics.
Best of luck,
Charles