It's a "fat loss' type product, so as long as your bring in some decent targeted traffic you'll see sales. Now getting cheap targetted traffic is the only problem. GL Vene
As this product has a gravity of 300+ getting cheap PPC is likely to be impossible. You might get some sales with article marketing, but if you're going for ppc, try to be an early bird with a lower gravity abs program. They're should be some at CB
I would say it's way too competitve... If for me, i would drive some free traffic and monitor the conversion.
I've made some conversions with it with natural traffic. Never tried PPC but as others have said - probably competitive.
I only use adwords for big launches and then free methods for everything else, I can tell you I have received great results in promoting this program. It has a very high conversion and you are guaranteed to make a sale each day. You will need to look into great keywords, although the gravity is high there is great money to be made with this if you think hard about the strategy to take when promoting.
I've made sales with it, but I've never used PPC. That's incredibly competitive for that product. I think you'd be better off with article marketing, Squidoo lenses, Hubpages, setting up blogs etc and shooting for some natural traffic. it's a pretty good product and the refunds are low.
It's a very good product - I've read it myself and I've promoted it for a while. Very competitive alright though - I built a content site around it so most of my traffic comes from SEO. Haven't tried PPC for it.