Reddington

I am interested in purchasing the 42 inch Toshiba plasma Tv Sears will be selling on BF. If I purcased it today, and went back on BF, would Sears refund me the $800 difference. I have read different answers to this question. I think the clearest understanding I have so far is that I would have to do this during the special hours of 5:00 - 11:00 am. Any input would be appreciated. Thanks, Scott