There is a specific For Sale forum here that you could list it on where you'd likely attract more potential buyers. Otherwise something like eBay might be your best bet for selling it. I'm an O gauger myself, so unfortunately I don't know too many people that might be interested within my circle of model railroaders.
Seriously, start a new progress thread under DCC, show us what you have, let us know what you find out. There is at least one other member using Traincontroller Gold, IIRC. Possibly more...Thanks for the help.....I want to nerd out with my train, wallet be damned lol