Recently got my Cartridges and other Collectibles website up and going (thanks to my tech savvy son). Still some tweaking to do. Do not have the single cartridges listed yet, as he is developing an ‘app’ for them. All new to me! Site is: http://www.bobscartridges.com/ I might be slow to get back to folks, but I will! Still adapting, ya know. I am not a dealer, just thinning out my personal stuff (in many fields of collecting).
Good luck on this Bob! Tom from MN