Can armor and weapons obtained from the pledge store be sold, or are they blacklisted to prevent people from abusing character resets to continuously resell armor and weapons?

Anything that's web-enabled or web-entitled can't be sold. If something actually is sold, then that's a bug and we actually need to fix it. But when we last tested it, it worked that way. So anything that was web-entitled, armor or FPS weapons, shouldn't be able to be sold.