Looks like they're probably blowing out old inventory from when Axiom wasn't all direct sales. If you look at the pics of the QS4s (assuming they're QS4 pics, not QS2s), you'll see it's the old style of tweeter (probably the 1/2 inch ones). However, I've never heard of the company, and haven't a clue whether they're reputable or not.

I am the Doctor, and THIS... is my SPOON!