DIY shoeshelf with small but tall footprint

I am selling a shoe shelf that I have built. It is perfect when your apartment entrance doesn't have much space for the standard IKEA shoeshelfs, but you can go vertical. It is 48.5cm wide with 30cm depth and 221cm tall. It has 9 spaces with 17.5cm height, and one space with 38cm height. I designed it with no back panel, but instead with 3D printed plastic T-braces. I did it that way, because I wanted air circulation around and behind the shoeshelf to prevent mold. A disadvantage of that design decision is that it is less stable. It stands perfectly fine with shoes inside, but it may be better not to get this shelf if you have children who hang onto the side of the shelf with their body weight. The shelf is build out of massive oak boards that were shelves in their previous life. I filled the drilled holes with plaster and treated the wooden panels with glaze. It can be disassembled into the individual pieces and screwed back together.