Looks like it would be around $80, I can measure/weigh it when I'm at the yard today, I gave them 48"x30"x4", and 35 lbs. I figured that was close enough to get you in the ballpark. Purolator seemed to be the cheapest. UPS told me if they packaged it for me, they would insure the glass...then told me they would charge me an extra $60 to package it???
I'll measure/weigh it today, anyway, but hopefully that gives you an idea.