Er, shipping was about 35%-40% of the total cost.
But, I did only order one disc and got the upgraded shipping option. The express mail option I chose gives Sat & Sun delivery, too. Certainly I could have spread the shipping over a few items (as soon as my sister found out I had it she made me order one for her! Oh well.)
It was well worth it to me, as my last ETA from Amazon was end of Aug to mid Sept.