http://www.amazon.com/StarCraft-Battle-Chest-Mac/dp/B00001IVRD/ref=sr_1_2?ie=UTF8&qid=1349916109&sr=8-2&keywords=starcraft
$9.98 and free shipping with Amazon Prime.
I've been watching this for quite some time, pretty sure it's the cheapest I've seen. I never played it, but I understand it's a...