While not disagreeing with Herr Louie and Mr Mick (and bear in mind I have not used a W/O SCT focuser) the Moonlite CR1 bears a look.
It is about US$165 and best asked for by using the website itself,
http://www.focuser.com/
I have just checked myself and cannot see a specific SCT focuser listed, but knowing Ron Newman like I do I am sure a simple e mail request will answer most anything you need to know, including the cost. He is an excellent guy to deal with.
Gary
P.S. the even better CR2 (dual speed) is only US$265.