I'm not sure how much it is, but DACARDWORLD.com usually has great prices on shipped boxes of MTG products, sign up for their mailing list and you get discounts from time to time, I think a couple weeks ago they had Coldsnap boxes going for 62 bucks, so check that out...
I think there's a promotional discount code in Inquest magazine, I'll look to see if I can find it...
Hope that helps...
-Goatman