If you live outside of the US, go for the cheaper "7 to 21 days for delivery" formula when ordering DVDs
from Amazon/Buy. When you make them use UPS/DHL, not only will the shipping costs billed by Amazon be higher,
you will also be billed by UPS/DHL afterwards for import taxes, holding fees, and god knows what else.
The extra cost could have easily be spent on an extra DVD or two (in my case, I ordered 12, could have gotten 15).
Worth the wait, if you ask me.
(I was shocked with the extra cost, to say the least!, Amazon/Buy doesn't tell you to expect these extra fees).
