Two suggestions: 1. bookmark it that way. 2. I don't know how you get to amazon, but I type "goldbox" and the browser brings up all pages that I've ever went to with "goldbox" either in the URL, or in the text, and then hit down arrow once for the one I go to the most. I suspect you do something similar, except with "amazon". Might I suggest typing the full url, I.E. http://www.amazon.com/gp/goldbox/&tag=headcaseorg-20
or
http://www.amazon.com/&tag=headcaseorg-20 and then the first couple times clicking down arrow to the one with the tag. Once you do that more than a couple times, it'll probably show up as second on the list (the other one being the non-tagged version). Then you'll have to hit down arrow twice to get to it. And then once you've done that enough times, it'll eventually drift to the top spot (I.E. one down-arrow).
If you already have a bookmark, just edit the bookmark, and add the "&tag=..." part to the end of it.