Who knows maybe I will be swinging it around my house when I'm alone before the other half gets home. Thats the part where it needs to not have a weird weight distribution or the blade come loose from the hilt.
Sign is trash - owner wants to get rid of the "silly cartoon swords" but they make too much money.
Then separate them into "replica sword" and "basically just a painting to hang in your living room" sections and lock the part that's useless in a display case.
The only problem is that the functional replica anime sword section is probably going to be entirely empty. They're basically all decorative wall hangers.
They'll differ in build quality, though. Some might break if you swing them hard, others might break if you hit something with them.