You didn't specify what year but having owned 5 Toyotas from brand new, the best source for Toyota genuine parts on the internet are 2 Toyota dealers in Texas: Toyota of Dallas and Toyota of Richardson TX about 30% savings from MSRP plus UPS shipping.
See Below Link for your P/N where Toyota of Dallas price is $38.50 plus S&H via UPS Big Brown and the MSRP is $53.36
http://www.trademotion.com/partlocat...&siteid=214074
Hope the Above Info Helps!