I feel compelled to write a review only to offset the horrid reviews I see here posted on this site. It does take a while for Coinbase to approve a high level of "Instant" purchases (as opposed to purchases that take days), but that is fine with me. The fact of the matter is that Coinbase is insured and it is a very "institutional" feeling trading platform. For me, that makes me like it more. There are lots of exchanges out there, but this is the only one with high financial level institutional trust for me to use. They charge a 1% fee for changing Dollars and Bitcoin in either direction (Buy or Sell), but for using your Bitcoin to buy services directly it costs nothing other than the BTC itself in your account. I highly recommend trying it out today!