Clickbank products - question about price discrepancies

Ok....so i am searching for a clickbank product to promote on a microniche blog and one thing i came across that was very confusing was some price discrepancies.

When im on the clickbamk marketplace and click on a product and see the sales page stating that the product is $37........i decided to google the product name and see that the first couple results are ADS (promoted or whatever) and state that the product is $17.

I clicked on the link and its the same affiliate website so why the price difference?? how come this website can offer it for less than half price of what clickbank marketplace is saying the price is for me if i want to set up an affiliate website for this product?

It's because the vendor provide different links for affiliates, if you checked the affiliate page you'll find the link of $17

Yep, some different products let you promote it at different prices. For example:

http://redteadetox.com/affiliates/links

Scroll down and you will see they have a $17 link and even a $7 link you can promote, even though the main product is $37.