When and if they become available, you'll likely find them with the online shops that specialize in selling telly and movie props and costumes. I haven't seen anything about them being made available yet, but when and if they do turn up I'm sure our Patch will find them and post about them. It may be a while before they are sold off since TNT has yet to make a final decision about Legends being renewed. They are waiting on stats for the entire series from the international markets. Even then, I wouldn't expect all of them to be sold since Sean has the tendency to keep articles of wardrobe that he particularly likes, especially the designer clothes like Dante wore.