Sources for used gravel bike

I'm relatively new to the forum and am on a search to find a used gravel bike.  I've narrowed my search down to mainly a couple of models (Jamis Renegade Exploit, Niner RLT 9 steel) but am still considering others as I come across them.  I've been regularly searching Pinkbike, Craigslist, and Ebay, but am wondering if anyone has any suggestions for other places to look for a used bike in this category.  I greatly appreciate any advice you could throw my way.
Thanks!

The Paceline (website) forum has a Classifieds section. Often see gravel bikes pop up there. A little while ago there was a nice RLT alu 56? for sale there (the orange and white/grey frameset).

If you sign up for a new account though, the quickest way to contact a seller is by PM (it takes a few posts to gain full access).

There's a huge Show Me Your Gravelbike thread in General Discussion 

+1. Paceline forum is the best site for used bikes and gear and info.

I've got a 2014 Tamland for sale.  PM'd you.

Thanks guys for the recommendations, I greatly appreciate it!  I registered for Paceline and will start to scower the classified section over there...something is bound to come up eventually.  Great advice on this forum as always, thanks again!

MTBR has some occasionaly in classifieds or their sister site roadbikereview.com 

I have a first generation aluminum 60cm(?) RLT I'd consider selling.