what exactly do decrypters do, how much do they cost, and where do you get them?

they decrypt this
try this

does it cost anything?

no,itz free

how is it different than blindwrite ?

Blindwrite is primarily designed to backup copy protected games. DVDs are encrypted with a specific protection scheme: CSS and possibly additional Macrovision protection. DVD Decrypter, AnyDVD, etc. are specifically designed to deal with DVDs.

damn, i was gonna say USD $38.11