Oh well. To the best of my knowledge, there's never been any kind of Star Trek figure line in the scale you're wanting. I just took a look on Amazon, though, and there's plenty of the minimates at much better prices than the site I linked before. Some of the two packs are only running a few dollars there. That's what I get for just going with the first link.
EDIT: I just remembered, there was a 3 3/4 inch line from the recent movie. Those have gotten more expensive since then, though, despite being dreadful figures.