Does anyone here know anything about "Ameri-willow" trees?

Can they be purchased locally?

There's a place in florida that sells em:
http://www.cdr3.com/willow/

Do you think it's a scam?

I'm looking for a few super quick growing trees to provide shade and
privacy while the oaks and pecans grow up. Plan is to cut down
the Ameri-willows after about 10 years, when the more desirable trees
are providing shade.