When did Amazon start charging sales tax?
This evening I purchased an ebook from Amazon for $11.99 USD and was charged $0.96 sales tax. We normally do pay brick and mortar stores a 8% sales tax in Arlington, Texas, but I've never been charged sales tax by Amazon before. They did not even charge sales tax on the Kindle WiFi I pre-ordered. As far as I know their is no brick and mortar Amazon store in Texas, therefore they should not be charging sales tax for internet purchases.
BTW, Sony can has to charge sales tax on books because they have brick and mortar stores in Texas.