Are digibook versions better quality/extras?

I have noticed several titles I want on Amazon are offered in 2 versions.
A standard package or the digibook.
The digibooks are at least $10 more.
(usual suspects, seven, shawshank redemption)

Do both versions contain the same transfer and extras?
or are you only paying extra for the nice book packaging?

I can not tell by reading the Amazon details.

Thanks