And not just any only $US400 Mario sweater, but an officially licensed $US400 sweater sold to you via the guy who created Earthbound.
The online store at Shigesato Itoi's website is offering a 100 per cent wool sweaters for ¥36,000 ($470). They're hand-knitted.
Not by Shigesato Itoi, though. He's busy, doing other stuff.
ほぼ日刊イトイ新聞 - 気の早いサンタのお店 [1101.com]