In reply to j99:
Hello there,
I think the vf kit it's the only thing that unless your friend becomes a via ferrata addict, he'll never use it again in his life. But the harness and helmet, maybe he'll start climbing... who knows, it may be a good investment to buy harness and helmet once you're there. You can then hire the vf kit in some local store. Check this out:
http://cortina.dolomiti.org/uploads/Guida/Noleggi/Snowservice_tariffeINV201... I have no relationship whatsoever with that shop, but it's the first one I've found googling "noleggio kit ferrata dolomiti". It does give you an idea of what it'll cost to hire a vf kit. Bear in mind it's not impossible to find a vf kit for €50 or less.
Ciao,
Nic
Post edited at 11:57