ZeCornKing
The Traveling Bazaar. A multidimensional marketplace that makes no qualms with traveling throughout all of existence for trade. Though it's large size has wiped several small countries off their respective maps, the items it brings to be hawked by its countless shop owners more than make up for the damage and loss of life. Many of the Bazaar's wares have shot entire planets through centuries of technological development, or have brought universes to their knees with eldritch power. Eventually, as ever, the Bazaar will pop out of existence within that plane, taking who or whatever happened to be within. Forcing them to pay for their own stalls to live and trade within the Bazaar as they desperately hope they can return home someday.
Well, this is my first story on this site, so hopefully, it'll go well. If anyone is interested in the idea, feel free to steal it for your own original story. And of course, I will gladly take any and all criticism.