Sourcing used Japanese-origin DVDs and Blu Rays online

I’ve got kind of a niche question. I was about to post it in the daily thread but I worry that the it’s a bit too broad. I got lucky at half price books today with a couple japanese origin DVDs with japanese subtitles. I’m having such a hoot with them that I want more!

However, I’m having a heck of a time finding a good source for more. I’m not sure if I want to take the proxy plunge yet and a lot of the usual suggested options, CDJapan etc., seem to just be brand new items only.

How on earth do I search, say on ebay, for japanese-as-in-from-japan DVDs and blu rays? Searching region 2 doesn’t seem to help, all obvious search terms just give me western releases of japanese movies, even searching specific japanese language titles gives limited success. finding random used japanese books online is ezpz, what hoops do I have to jump through to do the same for video media?

by ProfessionalSnow943