Verizon just launched their Network Extender Femtocell this weekend for $250. It is very similar to Sprints AIRAVE wireless service extender. In case you don’t know it just uses your broadband internet connection to extend Verizon service in your home with a mini cellphone tower. Unlike Sprint there is no monthly fee required so that makes this a better deal.
You can only use the device in the US (via GPS) which sucks since it would be awesome if you could take it overseas. Also the biggest failing is that there is no EV-DO support so your device will use really slow data! This sucks since Verizon BlackBerrys do not have WiFi for data. I actually tend to like T-Mobiles implementation of UMA better since it works over WiFi but that is a bit of a battery drain and does not work for non-WiFi UMA phones.