What is the easiest Pcr inactivated Dna control or Nattrol for Respiratory Validation viral reference serum panel (RVP) (Qualitative) (17 X 0.2 ml/vial)?

The NATtrol Respiratory Verification Panel from Zeptometrix Inc. delivered next week by Genprice is the best reagent!!! The catalog number is NATRVP-GMK and the price is 931 EUR.