I'm pleased to report that the HealthObesity vendor made suggested changes to her website. My initial review was here:

http://www.cbengine.com/blog/post.cfm/healthobesity-sales-page-review

My only other advice would be to maybe spruce up the design a little, although I'm not a stickler when it comes to graphics. I think easily navigable content is where 80% of the focus should go, but it's something to consider.

Here are the Google search results for free sales page templates. There are some nice ones out there:

http://www.google.com/search?source=ig&hl=en&rlz=1G1ACAW_ENUS318&q=Free+sales+page+templates&aq=f

I'd also drop the pop-up and replace with a slide-in. Google will ban Adwords advertisers from advertising your site if you have a pop-up ad.  Next I would test your sales page with Adwords. Buy some ads, see how it does. If you don't get sales, keep retooling your presentation until you do. Again, study the most successful sites in your niche and learn from them. They're doing something right.

If anybody else has advice for this vendor site, please post it in the comments. Congrats to vendor for taking the time to better her site. Great attitude!