It's currently on special (ends today) for 2 years unlimited calling for $149 (plus $36 junk fee, includes adapter lease). Usually they have sales on Black Friday but since the current promo is the same as the last Black Friday promo I dunno what they'll do. Maybe $129.
I've had it for a few years for international calling and it works great, never down, good call quality, etc.
Yes, I have VOIPo too with the prepaid plan. $185 /24 = $7.70 a month. Mine expires May 2013 and I will sign up again if they make the offer next year sometime.
I would even be willing to loose a couple of months if they made the offer again in Jan or Feb 2013.