some people are having problem getting the 25mm lens for $449.99. if i go to pany site add to cart it shows 549.99 .when i remove it from cart click out of pany site ,start over it comes up $449.99.then the lightbulb came on i can do this with every lens i tried this on .what ever the price shows the first time remove from cart you must leave the pany site. go back to pany. add the same lens and its comes up. cheaper.