I have been trying to buy a Sprint Airave Signal Booster for days. I live in the Louisville, KY metro area, and none of the stores in the area have one, and they say the Sprint warehouse does not have them. I called customer support and worked with them for 30 minutes, and at the end, they could not help me either. I have friends who use the other networks and they are able to get a signal booster for their home very easily. Does anyone know where I can buy one of these devices? Please help.