Yes, these shelves are not cheap. But they are worth every penny. They are extremely durable and can hold a lot of weight. They are mobile! And for a simple shelving unit, they look really nice. I have purchased 2 units for our office, 5 units for our warehouse, and even a unit for my father's small storage space. We store file boxes on these shelves and they are heavy. Yet the shelves do not bend and they are easy to roll around when we need to get to anything behind them. I highly recommend these shelves for heavy-duty storage needs.

Pros: durable, mobile, very nice looking
Cons: none that I know of