My preliminary price shopping has resulted in this:
UPS will charge around $140 for one-way shipping, and they guarantee by 9 AM on the third business day TO CUSTOMS (so it can take longer than that to get to final destination).
Fedex charges $108.6 for international first and guarantees 9 AM on the 2nd business day (but if you mail Thursday, it arrives on Monday). Again, this is guaranteed to get to CUSTOMS, not the final destination.
DHL charges $82.21 for 2nd business day by 9 AM. Same deal, only guaranteed to get to customs.
All options include $100 insurance.
I have not found any overnight shipping options, and 2nd day really doesn't mean 2nd day if customs holds up the package/envelope. I'm hesitant to go with the cheapest route, though, as this will mean months of waiting if they lose the package.