I'm curious to know the community's opinion of this recent change. It used to be in the beginning of 2.0, seasonal event stuff was sellable on the MB. I joined after the first Christmas holiday (I forget what they call it, star-something) when the dream items could easily be bought/traded/sold and the barding as well.
Even the past All Saints Wake wallpaper, pumpkin items and such could be put on the MB (before SE made them available on the cash shop). I know because I kept some from last year just in case they did this.
With these recent events though, none of the new items can be put on the MB at all. So either you were there for it, or tough luck go to the cash shop. I'm all for giving my fellow players an alternative to spending cash. I held onto that stuff for a year and didn't sell it for some ridiculously high price.
Since these things in houses will be destroyed anyway when they are taken down (unless the MB ones are different and don't get destroyed), why not let us sell them on the MB?