Just saw this and bit the bullet. If you get two or more, they'll extend an extra 15% off on the total.
The eBay seller has great feedback. Also, FWIW, on my Paypal payment it shows them as being from "Directed.com" (i.e. Python, Viper, Clifford, etc. company).
Some product review links below. It seems like the consensus is that it sounds better than a competing product. It doesn't have bluetooth. Early app issues have been addressed.
Audiophile-grade wireless speaker
The W7 is Definitive Technology's ultra-compact, audiophile-grade
wireless speaker, perfect for those who won't compromise on performance,
even in smaller living spaces. The W7's "Tri-Polar" configuration radiates
sound off of surrounding walls and gives it the unique cube-shape design.
As a result, the soundstage is broad and natural timbre can be heard
throughout a room.
What Obsession Sounds Like
There's a fine line between loving music and being obsessed with it.
When it comes to making music sound the best it can sound, we have a hard
time believing that good enough is acceptable. It has to be flawless. Perfect.
Uncompromising. In short, we think it would be crazy to give music anything
less than everything it deserves.
Start with one, then add throughout your home
The W7 is part of Definitive Technology's Wireless Collection which is an
all-encompassing solution for distributing audiophile-grade music anywhere or
everywhere in your home. Stream your favorite music services, internet radio and
your personal digital music library all from your smartphone, tablet or computer.
Definitive Technology Apps
The free Definitive Technology App allows you to mix-and-match speakers with the open PlayFi™ Technology standard and future-proof your home music solution. The Definitive Technology Utility App provides extended functionality, including product firmware updates, source selection (if applicable) and EQ settings for the W Amp.