I would like to recommend, Olathe Toyota, Olathe, Kansas, for purchasing TRD parts from.
Ph: 800-516-1455, http://olathetoyota.com
I mentioned being a member of TW. Brett (in parts) said, we give special prices for TW members.
He quoted a 2011, Tacoma, TRD, catback exhaust system, part#: PT910890610, for $353.25, shipping $55.00, delivered to my house for $408.25. Shipping is 3 days. I bought the exhaust!!
Brett stated, if you do not want to pay shipping, you may pick up any part & pay sales tax.
The closest price I found for this exhaust was $354.99 + $116.48 (shipping).