Man, 180mm just doesn't get a lot of love. This focal length serves dual duty - as a slightly longer than normal lens for 4x5, while for 5x7 it's slightly wider than normal. On 5x7 it gives comparable angle of coverage to a 135mm on 4x5, so if you (like me) prefer a 135 to a 150 for your 4x5 this will feel right at home.
And don't forget that it's convertible!!!
$175 now includes US shipping.