I know I am getting low on one side and have plenty for the other. Can't remember which I have extra's of. Not sure what pricing you are seeing on ebay but you aren't generally going to get a really nice one for $50.
I'd rather go new than some POS on eBay for 89 bucks. I found one at a site called PartsPak for $118. Shipping is about 11 bucks, but the 2 weeks estimated delivery time won't work for me .