Ok, I think I follow you.
I don't think I can answer this in one post. I may need some more information.
If you are able to launch something niche to an area or national demographic, I would go ahead and do it. Money is money.
You use the word "brand" pretty liberally, so I will assume you understand a few things.
Lets take
Welcome to IKEA.com for example... this is a furniture company that is scandinavian in origin. They are huge in the U.S. They have their site organized by nationality.
This would be one way to approach your question. Simply provide multiple translations or i8n support.
If you take this path, you would want to come up with a name or brand name, that is your own or unique.
Now, some things I am confused about....
Do you, for instance, know the merchants, designers, builders, of the things you would sell? If you can group them in some sense then my above comments may help.
If we are talking about a collection of independent people or artists, we have to approach things differently.
I guess my question is, where do you get what it is you are selling. If you can answer that and maybe send me an image as an example of a product, I can help further.
I hope that makes sense. I am trying to write translation friendly. I converted some stuff to Italian. I think I see the differences in our languages. Some things don't translate perfectly.
Spero che aiuta il mio amico
Nigel