As others have mentioned, 50 pairs of shoes is optomistic. Think more, 40.

I knew this when I purcchased them (2) so that is not why I gave these 3 starts.

The weld, the piece the wheels attach to is very poor. Less than a day and it wants to bend and I am sure it won't be long before it breaks. For now, we just don't move it. It is in its, hopefully, final resting spot.