Where do you live?
The used market is pretty incredible if you are patient. As mentioned previously tandemclassifieds.com is good if you want something quick and don't mind shipping. Similarly e-bay occasionally has some good offerings (as well as lots of junk). I've purchased and sold multiple bikes on Craigslist (bought our Calfee used this year...and saw some other screaming deals that weren't quite our size). I've also started looking on facebook marketplace.