I cannot use clickbank as it is not available in my location. However, I have worked wirth clickbank on my clients' website. I use clickbank plugin to promote clickbank products. Having clickbank plugin makes it easier to show click bank products in your website. I also use custom HTML widget to promote click bank product. Working with custom HTML widget will be little difficult as you have to create a HTML link to showcase specific products, however, when you promote specific products, sales will be better.
Will my target audience realistically spend this amount for the product? Again, your reputation is on the line here. Is the product you are thinking of promoting priced reasonably for your audience? When I was writing my ebook, I was stuck on pricing. I asked around for opinions. A number of people suggested I price my ebook at $47! Their idea was to price according to value, not size. In my mind that was crazy. My network was composed of a lot of stay-at-home bloggers, and my collective audience was comprised mostly of people without a whole lot of disposable income. There was no way anyone was going to pay $47 for my 30-page ebook.