Folksy Ltd

Advice on card spinners please

I sell my cards through a local farm shop. There are a couple of wire card floor-standing card spinners there which I use but the divisions are too wide for anything smaller than a 5.5 x 5.5 inch card. In one of the slots, someone has put a “small cards” acrylic holder which is perfect for my smaller cards. It just drops into the wire holder. I’ve been looking online for something similar but can’t find anything.
Has anyone any suggestions as to where I could find something suitable. Its probably about 4.5 or 5" wide, about 1.5 inches high and the same front to back and is in clear acrylic.