I paid about $30.00, (Home Again) but that included the lifetime registration fee, some have yearly fees, and you want to make sure that's what you want. I think it's great. I have skin kids, and the first thing I tried to teach them was their name and address. Joey's good with the address, but lousy with his name!
Anyhow, it makes me feel lots safer having one, and if you travel much, it would seem very important.