I'm guessing you know Needle Doctor? But just in case, see link below. Search under Budget Cartridges by price. I see a Sumiko Oyster for $75 bucks.
http://www.needledoctor.com/Online-Store/Budget-Phono-Cartridges?sort1desc=F&sort1=Item_ONLINECUSTOMERPRICE
http://www.needledoctor.com/Online-Store/Budget-Phono-Cartridges?sort1desc=F&sort1=Item_ONLINECUSTOMERPRICE