First link an offer of buds + a B.M.O.C and another buyer offering a Bubbling Reggaelator (1.5-1.8 buds) + 6-8 keys worth of sweets.

In the second link, one buyer is offering his Stormy Vintage tyrolean for it.

Looks like buyers want to buy this hat for a little amount that surpass the old amount. Can't find more trades about this hat with the same Effect

since I've only found 2. And check out that I took examples from the most recently offers.