Have you tried searching + looking at the forum sponsors down the main page? I remember a thread where a company on here was selling them but I forget their name.
already buying modifying parts without the car huh?........ive been looking for one for a while now and havnt found one yet. try doing an online part search with a breaker, search for the model numbers on here and let them loose on partfinder or something??
breakers for £190 from a low mileage standard TT so a least i know that it hasn't been running at 20+psi before i got it