I recently came across an article by Jon Wuebben which suggested that the placement of the ad on Prime position in Google is very crucial. I don’t think Google charges any money for placing an ad in a certain position. The only charge is when someone clicks the ad. But I am not very familiar with the Adwords. I ran a campaign recently which was not very successful. The reason was that although it brought a lot of click throughs, there were no sales or conversions. How do I make this transition? I would really appreciate any help with this.

If you bid more and/or have a better CTR, your ad will placed higher and be shown more in the ad rotation.

The reason was that although it brought a lot of click throughs, there were no sales or conversions.

Then the problem is your landing page(s).