Thumb Score: +18

HappybuyCL via Amazon [amazon.com] has 10-Tier NestOrganix Vertical Stackable Shoe Rack for $15.99.
Shipping is free with Prime.

–[list][*]Space-Saving Compact Size – 10.94″L x 10.94″W x 7.28″H; fits narrow corners and small spaces.[*]Stackable & Customizable – Freely stack multiple units; mix and match layers to suit any space.[*]Tool-Free Assembly – Snap together in minutes; no screws or tools required.[*]Durable & Easy-Clean – Made of water-resistant polypropylene; won’t rust or warp; wipe clean easily.