The daily- or weekly-changing price list a yard applies to inbound and outbound loads — driven by mill demand, LME indices, and regional supply.
## How scrap pricing works Scrap prices change daily for most nonferrous and weekly for ferrous. Inputs: - **LME (London Metal Exchange)** for copper, aluminum, lead, zinc, nickel. - **COMEX** futures for copper. - **Platts / Metal Bulletin** indices for HMS, busheling. - **AMM (American Metal Market)** for regional differentials. ## Pricing patterns - **Cost-plus:** Index price minus a per-pound deduction. - **Floor price:** Operator sets a manual floor that supersedes the index. - **Spot:** Quoted per-load when index data is stale or volatile. ## How WeighPay handles pricing WeighPay pulls live LME / COMEX / Platts feeds, applies the operator's deltas by material and seller tier, and pushes new prices to every scale workstation instantly.