You do have to pay the registration fee for Poseidon seperately, but Elbox do make this pretty clear. I have a Spider I and highly recommend it, it's most excellent, it's a neat and clean USB solution, and if I remember rightly the price of a Spider + Poseidon isn't much different to a Subway USB card anyway. Plus Poseidon dead easy to register.
Get USB in your Amiga, you won't regret it!
P.S. I don't work for Elbox ;-)
