What is the most sold Pcr inactivated Dna control or Nattrol for Human T-Lymphotropic Virus (HTLV) II Stock (Qualitative) (1 ml/vial)?

The NATtrol Human T-Lymphotropic Virus from Ncbi publications delivered next week by Genprice is the best reagent!!! The catalog number is NATHTLVI-ST and the price is 1.046 EUR.