Get in contact with one of the mods on here and they will show you the right way to apply for a vendors application. Here's the following mods there are more but these are the ones I could of think of quick best of luck
House of laughter (Jim)
If you are looking to be a vendor at the Swap, well that is another thing. Vendors on MR are offer the opportunity first, if there are any spaces left, which is rare, we then will offer them to non-MR vendors.