you do know how much they will cost you ...
Even the used one will sell for top $
I have an Elnec ... they charge top $ for adapters, made a huge mistake to sell my TNM-5000 who costed 250$ usd years ago, now they have quadrupled in value, the biggest advantage was no expensive adapters and a good software support i did not had at the time
Okay for the drivers i understand, but just to get more speed ... meh i would think twice
my 2 cents