Ok, I guess I'll step into it since I'm at least somewhat connected. Bernard's place is in Falmouth, Ky. 40 miles due south of Cincinnati. He has a store in town (on old 1920s' dealership building) and a 70 acre farm out in the hills. Most of his inventory is at the farm. No, he does not let people on the farm. Lotta good reasons for this, most involving liability. He also sells new parts and in that regard is just another retailer. Sometimes his prices are better and probably sometimes they are not. As one poster said "YMMV".
He is a Mercedes only yard. He spends a lot of time at the different auctions buying more stock. He also buys from private individuals directly sometimes. His inventory is huge. It goes back to the early 50s. I think there is over 100 123 chasis cars alone. Heck, I've aready sent a 124, a 126 and a 201 there (and some of those parts are back on current cars).
He works very hard to make sure you get the part you need (and a good working part to boot!) the first time. Sometimes when he is asking a million questions about what you need, people can become bothered. He really is trying to get the part you need. He is sitting there with a stack of books looking for the correct part even though MB may have changed it five times in the production run. Call backs are just not worth the trouble. Easier to deal straight up with people. You would not believe some of the cases of people trying to do him wrong.
He ships UPS all day long. He has a small staff of mechanics, office people and rollback drivers. He can be a cranky old German (so can I-heck I'm always cranky), but the wealth of knowledge on different models is amazing.
For new parts, hit the button at the top of your screen. For used, give him a call.
PS: I'm trying to drag him into the internet age. May even get a web page one of these years.