Kim's Republic via Amazon offers Prime members the Berchirly Vintage PU Leather Briefcase in Brown, model no. WB0033LC, for $27.59 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $9.45.) That's $70 off and the lowest total price we could find. It accomodates laptops up to 13" and features a cell phone and wallet holder, interior zippered pocket, and exterior back zip pocket.

Update: The price has increased to $32.59.