Posters of Daisuke

Does anyone know where you can buy posters of Daisuke? The only ones I have seen are the very occasional ones in copies of World Figure Skating magazine, and the promotional posters for the magazine (a blown-up version of the latest cover), at skate shows, competitions and occasionally, bookstores. Whenever I ask the stall holder at such events, however, where I can buy the poster, all they (unhelpfully) tell me is "We don't sell them". But surely, they must end up in someone's lucky hands eventually..surely they aren't simply...GASP...thrown AWAY???!!!!!