States are starting to collect Sales/Use Tax on eCommerce orders. That won't level the selling price playing field, but it'll bring the two several % points closer. If you can anticipate at all, online sure saves money. I ordered a part late Sunday night. It left the seller in the wee hours of Monday morning, 0300-something, and arrived Wednesday afternoon. $106 no tax free shipping vs. $148 and 7% tax. It's easy to see why people do it.