28 days. It's more than an unappreciated flick from the turn of the millennium, it's also driving the executives at Redbox, Netflix and a smattering of other unorthodox rental companies mad. Movie studios have been hellbent on keeping their new release DVDs and Blu-ray Discs out of instant-rent hands for 28 days after release, noting that dollar-per-night rentals could drastically reduce DVD / BD sales in the all-important launch window. Now, however, it seems that at least a couple of 'em are willing to bend. Starting this week in four major cities (Atlanta, Miami, Phoenix and San Francisco, for those curious) DVDs for Warner Bros.' "Inception" and 20th Century Fox's "Knight and Day" are being slipped into NCR's Blockbuster Express kiosks. The catch? It'll be $2.99 per night to rent either of them, a nearly threefold increase in the nightly rate that Redbox charges. Additional details on the trial are few and far betwixt, but it's safe to say that Redbox isn't any closer to nabbing fresh flicks sooner, and unless you're down with a 3x price hike, neither are you.