I have a Sargent seat for Triumph Street Triples. This has been used for approximately 2-years and is in excellent condition with no tears or signs of wear. Link
. Sells for $409. Will sell for $250 including shipping to the lower 48 States.
Also I have an official Triumph Street Triple / Daytona workshop service manual in a binder, as well as the hardcover Haynes Manual for the same. $20 for the Haynes and $50 for the official binder, both with shipping included to the lower 48.