I sell on Ebay, and shipping is really cheap. I know a lot of you guys hate it, but UPS can be a deal for large items compared to USPS. For instance, I just shipped a one-piece bass clarinet (around the length of the stock muffler) from Idaho to New York for $20 flat, and the clarinet and case weighed 23 lbs in a 42/7/9 inch box. Small items, go USPS. Large items, go UPS every time.