Official article title is:
"Microsoft wants you to trade your MacBook Air in for a Surface Pro 3"
Microsoft wants you to trade your MacBook Air in for a Surface Pro 3 | Ars Technica
"Microsoft wants you to trade your MacBook Air in for a Surface Pro 3"
This weekend, Microsoft Stores launched a trade-in program to encourage sales of the new Surface Pro 3, but the trade-in promotion named only a single device: the MacBook Air, at a value of "up to $650" towards any Surface Pro 3 purchase. At the lowest specification, that trade-in amount would let buyers walk out of a Microsoft Store with an Intel i3 Surface Pro 3 for as little as $150.
Microsoft wants you to trade your MacBook Air in for a Surface Pro 3 | Ars Technica