lookin' for a new lamp

I am in love with this lamp - original design by Achille Castiglioni and designer price is about $2500! Yikes. It is one of the classics of modern lighting design-and part of MoMA's permanent collection-the Arco Floor Lamp (1962). As much as I love art and furniture, I'm still on the fence if I would invest in such a lamp. I guess I can justify it being functional art and the fact it would fit perfectly in our great room.