Online SSAT preparation courses?

Has anyone purchased one of the prep courses that are online.

Shmoop seems to offer some free practice.

The others were about $200-$300.

For example:
http://www.eprep.com/courses/ssat

http://www.academicapproach.com/online/ssat/

There was another one I saw too but I can’t seem to find it.

Check with the school to see if they offer anything. Prep works is available to all students at DS school.