Where do you buy them in bulk from?
any online vendor.... ends up being cheaper places like
www.1sttoyotaparts.com ,
www.trdparts4u.com , or kneedownnate's brother aaron ---- you can buy 1 or 2, but some places charge shipping, and that makes 1-2 impractical for a discount
just gotts price it out, sometimes, they will even pricematch against each other, some don't charge sales tax because of the state they are in, etc