Yes,they seem to get a good rating by users too.
Thats equivelant to about £20 in our money,almost free!!
I've never bought these cheap motors for boats,helis and planes before,sticking to mainly Megas,Neu's, Axis,and Kontronics,which are all running still like new.
This boat doesnt really deserve an expensive motor,it will probably only get one pack usage per visit,i mainly run gas stuff at the lake.
Trying to keep it cheap.

I have a spare 1/4" outdrive unit and flexshaft.But might be a bit big for the motors linked?
http://www.prestwich.ndirect.co.uk/wpesf2.jpg

Brod..