I had no sooner placed an order with a Chinese company on Monday when a friend called and asked me to order a 510 kit. He wanted it quickly, so I place an order with a vendor in the U.S. What I didn't realize was that the $5 I paid for shipping was not for priority. The end result is that I just got a package from China and am still waiting for the one from the Midwest. The USPS should be ashamed of themselves and $5 is too much for "first class' shipping.