69 Pa. Stat. § 1307
The seller shall deliver to the buyer, or mail to him, at his address shown on the contract, a legible copy thereof completed in accordance with the provisions of this act. Until the seller does so, the buyer shall be obligated to pay only the cash sale price. Any acknowledgment by the buyer of delivery of a copy of the contract shall be printed or written in a size equal to at least ten-point bold type and, if contained in the contract shall also appear directly above the space reserved for the buyer's signature. The buyer's written acknowledgment, conforming to the requirements of this section of delivery of a copy of a contract shall be a rebuttable presumption of such delivery and of compliance with this section and section 304, in any action or proceeding by or against an assignee of the contract without knowledge to the contrary when he purchases the contract. If the holder furnishes the buyer a copy of the contract, or a notice containing the items required by section 303 and stating that the buyer should notify the holder in writing within fifteen days (15) if he was not furnished a copy of the contract, and no such notification is given, it shall be conclusively presumed in favor of the third party that a copy was furnished as required by sections 304 and 307.
69 P.S. § 1307