Buying online could get more expensive thanks to a new Supreme Court ruling on states rights. Luke Dormehl:
If you buy your products online, you could soon find that they get a bit more expensive — due to a Supreme Court ruling that states can now require internet retailers to collect sales taxes. This decision ends 50 years of legal battles banning states from imposing sales taxes on purchases sold by out-of-state retailers.
How much, if any, an increase depends upon the taxes levied in each state.