Microsoft is offering owners of Surface RT and Surface 2 tablets up to $150 towards a new Surface 3 (not the Surface 3 Pro).The offer is over on the last day of this month. The catch is that you have to use the discount by June 31st.Here's the link to the offer:https://microsoftsurfacetrade.cexchange.com/online/Cart/BeginAppraisal-ShowAppraisalForm.rails?enc=za5oD3sfA8/6+KuNOMWtBLG5Vxl5EyMf5Z5IOJGJszxdCIRFbiqe77P9kAZGgl7ThWb6Kx54gdHeHXqMtv4j/vZlEY2rx4IPyuekK/75yF8aIHtfqLKmdifBFmI6Ica8