There are several reasons why I cant get warm with Vetra.

First of all, I would need two of them to drive my pack of five.
Next, its PS/2. With four of my systems being notebooks, I need to buy PS/2 to USB adapters, which is not a that common item either and costs me a penny. All in all I would expect approx $500 for two Vetra boxes, the PS/2 to USB adapters and some cabling.

Next, they are a US company, I am based in Europe. Vetra lists two dealerships in Europe, one French company which lists some Vetra products and a Danish company that shows the Vetra website in a frame, but no Vetra products in their webshop.

I am still interested, but its certainly not as simple as indulging oneself on Amazon.