Have you been paying $29 and now $39 a head for usertesting.com?
Mashable has a list of free and commercial screencasting tools, including web-based/online ones.
The Screencasting Handbook has another list with certain other ones listed and describing relevant feature differences.
Finally, some generous soul gave Wikipedia a really comprehensive list of such tools, but without much detail on features.
You can use this plus the methodology in Rocket Science Made Easy (Steve Krug’s guide to usability testing) for really cheap tests, or even free ones.