Once you are getting a lot of traffic to your page, you also need to provide your readers with several chances to click out to your vendor.  A person needs an average of twenty reminders before they will act on something.  So why not give them at least ten chances to click on a link to your vendor.  Not all the reminders have to be a link, so make some of your reminders pictures or descriptions.

You can also have links go to other pages that contain links to the same vendor.  For instance, if you are on a site that restricts how many links you can have, you can just make several pages that all go to the same vendor.

If you are using your blog to draw sales, then you can repeat links in more than one post, and on the sidebar so that your reader keeps the vendor that you want them to buy from in the forefront.  If they are a regular reader of yours, then they will eventually buy from that particular vendor if you keep recommending them.