Identity: Cheap wallhanger set, probably produced in China.
Price: These are worth exactly what you paid for them. Nothing.
Sorry, bud. These are junk. Items like these are a dime a dozen at flea-markets, fake Asian gift-shops, and websites like Bud-K. They are non functional. Do not attempt to cut with them. Don't even swing them. They are DECORATIVE ONLY.
As far as their edge, MOST stainless swords are sold very sharp. It's a very sad fact. They aren't usable swords, but the edge makes the kids who buy these pieces of shit to think they're real. Many serious injuries have stemmed from this assumption.
Either hang them on your wall, or throw them out. If you throw them out, cut them down into bits to keep someone from finding them in your trash and using them for stupid/criminal purposes.