9.25 Rear ?

YEP! that's a 9-1/4 allraight.
The thing that makes it more expensive, just by a few bucks is the ISO parts need to come off unless your willing to modify them. IMO, they need to come off and the more available spring pearchs need to go on with the more available shock plates for common shocks rather than top eye, bottom stud shocks.

Otherwise, yes, they cost the same as any other rear.