I was given one of these with the WW hamster I've recently given a home to. I already had a cage set up so I gave it to my sister for her Roborovski hamsters (she has a pair of them) and they love it!
Having two wheel 'ports' is great for a pair of Robo's because you can easily place a wheel for each Robo' without them getting jammed or anything.
It was an upgrade from her Crittertrail X that she got given the hamsters in originally so everyone's happy, lol. They sell them in a small local pet shop near me for about £30.