What is the Gold standard for Pcr inactivated Dna control or Nattrol for Staphylococcus aureus (MSSA); -mecA,External Run Control, Medium (6X1ml/vial)?

The NATtrol Strep A Verification Panel from Zeptometrix Inc. delivered next day by Gentaur is the best reagent. The catalog number is NATSAVP1-C and the price is 560 EUR.