Hello. I thought about it after reading a post at bricksetforum.com from a guy who had done it. I contacted him (to get some advises) and some bricklink seller and all of them told me that it would be much more expensive than buying the set, even the guy at brickset (he lives in New Zeland, I think, and told me that he didn't know the exact amount but clearly he had spent more than 800 euros including the shipping costs; he expected my cost would me less as I live in Spain)
So 350 euros sounds great!
I've to say I had the set in my hands twice last year (in different shops) and did't buy it (600 euros was the price then...) I regret not doing so... I even thought about buying both of them, keeping one and selling the other (not seriously, just crossed my mind) At the actual prices, mine would have been for free.
Regards