I’ve gotten a ton of great stuff from retro retrogamingcables.co.uk. You have to wait a while for shipping but you don’t have to wait for restocks usually. You can’t go wrong with either place though. Retro access has done tons of great work for me too.
The RAD2x is essentially a console-specific RetroTINK2x that line doubles 240p/480i to 480p HDMI. It uses the RGB signal and if there’s no RGB then it automatically uses composite video instead. It’s for people that want a cheaper RetroTINK2x alternative that only want to use one console.
I ended up going with Wookiewin or whatever the person’s name is on ebay for what I needed, but thanks for all the suggestions. I’d like to get a new cable for my SNES mini, as I’ve noticed some weird artifacts when playing on my PVM. Not sure if it would be the mod on the system itself or the cable, but I’ll start with the cable.