Lol, umm not to bring you down, but the last yeti was sold for:
2 Senior Beta Pickles1 GNG Music Box1 Complete set of 23 cubimals1 Complete set of 11 Giant Icons (the completed statues that take 11 emblems to create)
Keep in mind though that a lot of the prices for items like this really depend on the owner and how much they are willing to part with it for. Just because someone parted with it for all that doesn't mean that someone else won't give theirs for 400k, or maybe they would want more. It all depends.