Especially since you get stuff with the box version. Not a lot of stuff, sure - mostly just a booklet that contains an install guide and a detailed summary of the StarCraft/Brood War plot, but there's also a nifty little notepad with a Jim Raynor Wanted poster background - but still stuff.

(Oh, and a couple of guest passes to each of SC2 and WoW. But you know, whatever.)

Plus, you don't have to download eight gigs or whatever of install file...