I would say around here in Southern California, PennHIP is usually around $350-400. It completely depends on location, medications used, and so forth. PennHIP films require deep sedation or light anesthesia that relaxes the muscles for the compression/distraction views and the veterinarian requires special training/certification to be able to do them (and to even own the equipment to do them- the "distractor" is numbered and registered to an individual veterinarian). OFA's can be done at the same time for a tad more (since the same view for OFA is also used for PennHIP), but PennHIP does not evaluate elbows so those are additional views done for OFA submission.
OFA's costs (for obtaining the films only, not for sending in for OFA evaluation, which is a set cost on their website) depend on location and whether or not sedation/anesthesia are used (I've heard quotes anywhere from $110 to over $300). OFA recommends sedation since they feel it gives a more accurate picture of how well-seated the hip sockets are. When a dog is nervous and laying on its back for radiographs, those muscles are generally pretty tense. http://www.offa.org/hd_procedures.html
