What's the difference between budget and premium packing cubes?

Premium options like Thule and Eagle Creek's Pack-It Reveal line list water-resistant, sustainability-certified (Bluesign) or mesh-window fabrics and command higher prices, but they carry far smaller review counts in this pool. Budget sets like BAGAIL, Veken and vallilan have tens of thousands of verified ratings; the consensus tradeoff is long-term zipper and fabric durability versus upfront cost.