I paid only $30 for these from eBay. For anyone who isn't a basshead, this is the PERFECT budget IEM for you. Nice detail, controlled bass, treble that doesn't pierce your ears. If you want to try the RE0 but you're not sure if you'd like it, you should start with this. Just make sure it isn't a fake, because there are a lot of those around. Soundstage is kinda small, and isolation is only slightly better than an earbud, probably because of that big hole in the back of the IEM. Also, try some different tips because the stock ones are shaped in a way that they will squeeze themselves out, unless you have perfectly shaped ears.

Just about everything that an entertainment device should be. SQ is great, you can use YouTube, you can browse the internet, and of course there are many great apps that you can get. The new 3.0 update has made it somewhat short on battery life, but that's not a problem unless you're using it just to play games.
 
I paid 250 for mine when it was relatively new, but now that the 3rd gen has come out, you might be able to find one used for as low as 100$.