It may be cold at the Sundance Film Festival but the sales market is hotter than ever thanks to a combination of commercial titles and deep-pocketed streamers hungry for content. After sitting out last year's Sundance following its splashy pre-festival acquisition of Life Itself (which did not work out), Amazon Studios returned to Park City with an open checkbook, ready to spend. The studio made its move early, pouncing on Nisha Ganatra's Late Night starring Mindy Kaling and Emma Thompson, as well as Scott Z. Burns' The Report starring Adam Driver, Annette Bening and Jon Hamm. […