I think the big advantage of amazon's tax-exemption isn't necessarily competition from physical retailer's, but rather from the online presence of those same ph

I think the big advantage of amazon's tax-exemption isn't necessarily competition from physical retailer's, but rather from the online presence of those same physical retailer's. For example, I was checking out target's website the other day. They were offering some online only prices on things, I loaded an item into the cart, but at checkout, when the tax and shipping was added, I backed off because it was too expensive. On amazon, due to the no-tax and (usually) no shipping charges, I probably would have made that impulse buy.