I've sold lots of items on Craigslist, and never had a problem. I do require that the only acceptable form of payment is cash. For anything over $100, I have the buyer meet me at my bank where the payment is immediately deposited, and then the paperwork (if any) is notarized if required.
What you don't want is for somebody to give you a large amount of cash which they can then try to steal back from you later.
2016 Ford F350 Turbo Diesel SRW 4x4
2017 Grand Design Reflection 297RSTS
2013 Ford F350 Turbo Diesel SRW 4x4 (Destroyed by fire - 8/29/16)
2014 Grand Design Reflection 337RLS (Destroyed by fire - 8/29/16)