Busy Bee (in Canada) sells an 8" wide shear for $245.00 Canadian,
which is about $156.00 U.S. It goes on sale every so often for Can
$200.00.
http://www.busybeetools.ca/Click products, then sheet metal tools, then B2313 SHEAR BRAKE MINI 8"
I have no connection with Busy Bee other than being a (usually)
satisfied customer.
Grant