What confuses you about the term 1-license?
D/L version $39
DVD Ver, $69
A single DVD disk plus postage, costs MSFT a couple dollars. So why the $30 overcharge?
It's damn near the cost of the single license for $39.
Also past examples of Disk vs D/L allowed for two installations vs one, respectively.
That's where the confusion comes from, Pboy.