Ebaybot is a mambot or plugin. All you need to do is place the tag for it within your article content. The tag should look something like:

{ebaykit id='search+term'}

Replace search+term with whatever you like.

If you do not get the results that you expect, have a look at the content that you are inserting {ebaykit id='bike'}into in HTML editor mode. For some reason, some wysiwig editors change the curly brackets to normal brackets.

I have made a newer version available that includes a number of enhancements You can now display any combination of genres that you choose in a single store, allow the user of your site to select the feed that they want to see and also made improvements to caching (including being able to nominate where you want the cache to be).

Thanks to micoots for the suggestions.