that seems pretty good, That is about a 30Mb download speed if you convert it to what it is sold as around my neck of the woods.
MB Mega Byte
Mb Mega Bit (Most ISPs around here use this measurement for a selling point)
Edit: 17,000/3.6 (MB per second) = 4722.22/60 (seconds in a minute)= 78.7037/60 (minutes in an hour) = 1.31 (or 1 hour and a little over 20 minutes) for the download
The ESO launcher measures in full MB not Mb (at least mine does). Casdha has it right. I've had to do the math before when thinking that it was going really slowly when in reality, I was actually over my bandwidth cap.