eBay seller Needledaddy1. His knowledge and inventory is amazing. --cheap too.
I'm pretty sure Needledaddy1 states the manufacturer in all his listings. I've bought many (5 or-so) stlii from him, but nothing too high performing in the first place--just replacements to get stock cartridges back in working condition.I'm intrigued. Looks like he sells "generic" replacement styli. Are they any good? The Shure M97x replacement sells for less than half of what it goes for on Amazon. As I am in the market, I'd buy this if it was a decent replacement.
Oddly enough a good local source is Rat shack often competitive in pricing too. Neat thing is they are returnable if you get the wrong thing.