Samsung announced an unlocked version of the Galaxy S7 for the US market yesterday, and Best Buy is already offering a sweet deal to entice buyers to pick one up. Buying the unlocked GS7 or GS7 Edge from Best Buy gets you a free $75 gift card. That effectively makes the unlocked phones much cheaper than the carrier versions.
These devices will work on CDMA and GSM networks, but it looks like you can only get the standard GS7 in black and the Edge in silver. And just FYI, the silver color is the best one. These phones are powered by the Snapdragon 820 and run Marshmallow without all the carrier bloat. The GS7 is $669.99 and the Edge is $769.99.
You'll get the $75 gift card after purchase, so you can't use it on the actual phone. It's not as good as a regular discount, but you can use the card to pick up some accessories you would probably have bought anyway. The devices are available online with free shipping or in a fair number of physical stores around the US.