I sell on Ebay, and that works fairly well. (except the 9% of item value that Ebay takes out. 🙂 )
Keep in mind also that PayPal takes their ~3% cut from eBay sales.
I don’t use Facebook personally, but I’ve heard that Facebook Marketplace is a pretty good way to sell stuff these days. (It’s similar to Craigslist, but probably more effective).
Do a little price sleuthing and find out what the gear is actually worth, then do an instant quote with KEH and see what they’ll give you. Then you just have to decide whether it’s worth the extra time and effort to photograph and list them yourself. 🙂
Can’t hurt to list it here on Lenspiration as well, you never know who might be looking to upgrade!