Definitely buy. If you have to buy skis ok, but you must know in your heart of hearts boarding is where it is at..
Unless you get an ABSOLUTE GIFT second hand you are better off avoiding it. You just can't know how many services the gear has gone through. You should be able to get an Auslauf (last season) set of skis quite cheaply at Ochsner. You could try the Pfäffikon branch. I think they have some offers out.