There are many who have banked on Mac users as being big spenders, and rightfully so. Certain analytics have shown that Mac users are more likely to book pricier hotel rooms than their PC counterparts. Because of that data, Orbitz, a popular travel site, shows Mac users higher-priced deals. And it all started with the Mac tax, the idea that consumers will pay more for Apple’s technology compared to other brands. According to a recent Wall Street Journal report, Orbitz and other...