I'm in the same situation as the OP. I have a PID'd Rancillio Silvia with some other upgrades that I've done over the years since getting the machine in 2000. Now it's time to upgrade to a Breville BES920XL but I'd like to get a decent amount for my Silvia.
Craigslist is an option but I'm also considering the
Coffee Geek Classifieds which still looks fairly active.
I wouldn't use a Nespresso if it was given to me for free, so I guess you could say I'm not "over it" as well.