Warehouse and logistics websites are genuinely difficult to build well because they serve three very different audiences: customers who want simple ordering, partners who need detailed inventory data, and internal staff who need operational tools. Most builds fail because they try to serve all three through one interface, which ends up being mediocre for everyone. The other common problem is that the data model for inventory and fulfillment is far more complex than it looks — multi-location stock, backorders, partial shipments — and teams underestimate it until they're already committed. Getting the data architecture right first saves months of rework later. There's a discussion on https://rocky-spin.pt about scoping technical projects based on actual complexity rather than first impressions — the point about the data model being the hardest part was well-made. What's the specific challenge you're hitting?