Also visit your local antique shops! I use to collect, restore, and sell vintage safety razors, at one point I had 80 razors with probably 70 at least being vintage and I had only one razor out of all that with an issue I couldn’t fix, basically all of them just needed a good cleaning, maybe a little oil if they’re mechanical. Personally I got rid of all my double edge razors and now only use injector razors, ones I like are from 1950’s and on. Supply razors make a modern injector razor that’s pretty awesome too for not too much