I couldn't find anyone to buy or take (free) my G-System; it's big and heavy and costs more to ship, so I just trashed it.
Some newer MFX from companies like Mooer if you want cheap. I have a Line 6 HX Effects and it sounds/works great for me, They recently had a $100 off sale, so you're looking at the price of one or two highend pedals like Strymon or ChaseBliss, and I'm sure there are used HX Effects availabe.
FWIW, I had the M9 back in the day, and the HX Effects sounds much better and is much easier to use IMO.