Remember when Microsoft took the wraps off its new 12-inch Surface Pro 3 while comparing it to a MacBook Air last month? Microsoft is hoping that argument was convincing enough to at least some MacBook users with a new trade-in offer allowing MacBook Air owners to get up to $650 off a new Surface Pro 3. All they have to do is hand over their MacBook Air and hop on the productivity train with their new Windows 8 hybrid tablet/ultrabook.

With the trade-in discount, the $799 base model Surface Pro 3 comes to just $150.

We’re assuming the full $650 trade-in value will be for the latest Air models in good condition, and the deal will require you to hunt down a Microsoft retail store by July 2014 to complete the trade-in. Any takers?