Back in March, T-Mobile eliminated subsidized phones and 2-year contracts at its own stores and website; but when it came to its retail partners like Best Buy, Walmart and Costco, those stores were allowed to continue offering the Classic plan with the subsidies and the signed pacts. At the time, T-Mobile explained that it would be hard to handle things like inventory control and crediting sales personnel...
Source: http://www.phonearena.com/news/T-Mobile-to-replace-Classic-plans-at-its-retail-partners_id47854
Source: http://www.phonearena.com/news/T-Mobile-to-replace-Classic-plans-at-its-retail-partners_id47854