I can't seem to find an ideal column number to keep the items in an order where matching items go together. I think it's because the first item is shorter and it causes misalignment. I do see what they're trying to do, and it's definitely cool. Only pinterest board I've thought was worth looking at.
Some images are 192x8228 pixels. This is probably scrolling in the shop monitors (if there are any). It has a catchy effect.