Which websites specialize in selling vintage Mercedes-Benz project cars?

So I have been staring at this empty spot in my garage for like six months now and I finally decided its time to find a project. Specifically looking for a 70s Merc, like a W114 or maybe even a W108 if I can find one that isnt totally rusted out. I have about $9000 saved up specifically for the purchase, which I know isnt a ton for these cars nowadays but I am looking for something that needs work—nothing that runs perfect right away.

I have been looking at Bring a Trailer pretty much every day but honestly the prices there are getting insane even for the no reserve stuff and I dont want to pay a huge premium just for the site name. Then I checked out Hemmings but most of those cars seem too nice? Like they are already restored and that kills the fun for me. My logic was that there might be some smaller, more specialized site for old Benz parts and projects that I am missing. I also checked out the PeachParts forums but their classifieds seem a bit slow lately.

I am in the Seattle area so I have to be careful about rust and I really want to find a site that actually has people who know these cars selling them. Should I stick with the big auction sites and just wait for a deal or is there some hidden gem site specifically for old Mercedes projects that I havent found yet? I really want to get started before the winter really hits so I have something to do in the shop...