The gold-standard pricing for smartphone launches has been about $200. Sure, we see the occasional flagship model that arrives with a lower price tag, like the Lumia 920 did, and there’s a phone every once in a while that demands a premium price, like the Galaxy Note II. As we learn about the start of pre-orders for Samsung’s Galaxy S 4, it’s looking like the handset will fall into that latter category, as AT&T has confirmed plans to sell the phone for $250, on-contract. AT&T will open pre-orders for the GS4 on April 16, though it hasn’t yet confirmed ...