What is the best quality controlled Pcr inactivated Dna control or Nattrol for Clostridium difficile NAP1, External Run Control, Low (6 X 1 ml/vial)?

The NATtrol Clostridium difficile NAP1, External Run Control, Medium from Zeptometrix Inc. delivered next day by Gentaur to your Lab is the best reagent! The catalog number is NATCDI(NAP1)-ERCM and the price is 432 EUR.