KEH is probably quick and easy, but they need to make a profit. That profit comes from your end of the deal and is probably substantial, especially given their reputation for conservative grading and reasonable sale prices.
Selling here is pretty simple if you know what you want for your gear. eBay, as much as it seems to take hits from users in online groups like this one (with references to fleaBay, evilBay, etc.) is a great place to sell, and if you do it right, maximize your take. Give a good, detailed and accurate description. Use lots of clear pictures. Use a low starting bid ($1 would work!) and be ready to stomach watching as it seems like it will sell at far below your happy price but then zoom beyond it in the last moments of the auction (usually). Pack well! Be prepared to sell internationally, and assume the headaches that come with customs forms, etc. ...doing so will increase your bidders pool substantially for an item like yours. New to eBay selling? Might want to try out some lower risk items first to get the hang of it.... But I've done dozens of camera gear-related purchases and sales, don't know how I got by without it....