Although shoppers across the board are using the web to aid with buying decisions, purchasers of higher-end goods are more engaged with mobile and online visual tools than their general-market counterparts. Luxury auto buyers, in particular, are twice as likely to watch online video on their PC and mobile devices. Full Article
75% of those earning more then $200-500k use mobile smart phones.

One fourth of iPhone owners and one fifth of Android owners use m-commerce.  QR Codes are coming. apps.http://www.internetretailer.com/2011/06/22/one-fourth-iphone-and-android-owners-use-m-commerce-apps 

Source is Forrester Research.