Robotdigg actually came through with a delivery of 2 GT2 - 20 tooth pulleys and a length of GT2 belt. Everything looked good, set screws were there, even a little allen wrench included. For that price you can't beat it if it holds up after use. We will see how Chinese parts work (there were no obvious flaws).
Shipping: Took about 2.5 weeks.
Response: His response time was pretty quick, even updated with a tracking number when I asked.
Website checkout is a little weird but overall it was a smooth process.