Where do you look for rare records and pressings ?

Yeah, chase never ends. Since I don't need many records I have an advantage when it comes to the price, within reason. Couple of records a year is fine. Trusted dealers is a good idea, those that kind of accept special orders.
By the way, I ignore amazon as much as I can, it is a monster company closely aligned with the government, not the best part of the government. I don't care what they got.

I did get a few from Japan on ebay but that's it and I can't check ebay every hour in an effort not to miss anything. Same with discogs. We just need more upscale vintage boutique stores, not only for records. I liked ebay much more in the beginning when there was no buy it now, only auctions. It was a little wild and sometimes you had to send cash. No problem for me, I lost some but gained more. And there was virtually no overgrading, in my experience, and Japanese usually downgraded.

I heard that German audiophile society can be a source for master tape dubs, not sure about rare records. Besides, I don't speak German, though a number of Germans speak English.