My wife was soooooooooo enthusiastic about giving this Droid to me for Christmas, she signed me up for full-boat package. The bill came in at about $170. I went to Verizon to see if we still had to pay that amount since, by their tech's own admission, the Verizon map was wrong and we have no service at my home. They agreed to a "partial credit" and suggested that the extender would work, but of course, would not let me have it for free.
Something their sale/tech advised that really made sense was that I stick with the Droid and Verizon to use primarily while at work or away, my wife has ATT which works almost everywhere so far, and we could get MagicJack as a cheap third line. That way, if someone desperately needed to contact us, they would have 3 numbers to try... especially if we are out on the road, traveling -- if ATT was out of range, maybe Verizon would be in range, and vice-versa... we would have a larger area of reception with two providers.
Made sense, and I'm still considering. As for the "credit", he will call me tomorrow once he finds out "what he can do".
The only reason I'm posting all this is in case someone else may be going through the same thing. Maybe it will help.