Bosses drop tons of jewelry. I'd love the addon to flag low-ilevel jewelry for sale as well, possibly with a few items whitelisted by default, like the Dalaran rings and BT necklace.

This should be in if you check "Can't be learned". If this doesn't work it's a bug.

trinkets and stuff still dont sell, id love to have those sold through your addon as well

I'm currently not playing the game, so pull requests welcome!

Jewelry can be sold with this addon. I was able to fix this by unchecking "Transmoggable Items Only" in Can I Mog It?