Considering that PeepCode sells their videos 9$ each and has cheaper options if you purchase a plan I find 14$ a bit steep for a video from someone I don't know as well.
As for the price - PeeCode sells all their recent videos at $12 each, for ~1hr of content. So, $14 seemed reasonable to me (also based on the price I've paid at Tekpub, DestroyAllSoftware and other screencasting sites) considering the length of the content that I've produced.
But, you may be right. Maybe I should drop it since I am an unknown person in the screencasting world.
My 0,02€!
Also, consider putting up some short but useful videos (not teasers) for free, so people get to know your style and trust your expertise. Charge for the longer, premium content.
I've got a few 5 or 10 minute videos on getting started with Test-Driven JavaScript using the Jasmine framework. I can give those away and then have a much longer episode on really diving deep into Jasmine. Hopefully I'll be able to get this done soon.
If the free examples are solid, then they will be linked to and shared. This will help establish your name and expertise in the subject matter, and will bring many more eyeballs to your site, which will hopefully convert into sales.
Agreed with making some teaser videos -- perhaps the first 15-30 minutes of the video they are interested in. Then bring up a call-to-action and measure your conversions.
Due to the possibility of people watching this at lunchtimes at work it might also be a good idea to (1) create some way for people to bookmark where they watched up to, and (2) make the site look as work-like as possible.