That should be explained in the contract. You should not have to pay extra for the pedigree. Deafness is not uncommon in Dalmatians. It can be detected at an early age, and affected pups should be humanely destroyed. That's one of the biggest disadvantages in buying a pet shop or commercially raised pup - no one cares whether or not you're having trouble.
Responsible breeders make that a requirement for sale.
All Dals should have at least one basic obedience class. All breeds have their drawbacks, and they should have been explained to you. If the answer is no - then you should reconsider your desire to purchase a puppy.