Anyone know a good place to order this thing from? The Tokina 11-16 2.8 seems to be on backorder from the bigger sites... You can find them on Amazon, but theyre $100 dollars "overpriced"... which Im assuming is due to the lack of availability on the web. Also if anyone has ordered and received one from Adorama / B&H is there an expected timeframe of shipment? I think I may put in an order with my C.C. but dont want really want it to be billed ( it bills as it becomes available and is shipped, not at the time of order ) at the same time as an upcoming vacation.