There are some Etymotic promotions going on. But their website is pretty crappy design, hard to tell what the actual prices are.
I think if you buy the MusicPro earplugs (at $400), you get HF3 for free.
Another promotion has the cobalt HF2 for $99, 1/3 down the page here: http://www.etymotic.com/ephp/hf2-buynow.html
As far as I know, both HF2 (for Android) and HF3 (for Apple) share the same balanced armature as HF5. Etymotic just likes to number them weird.
Edited by jjmai - 11/25/12 at 12:48am