I have been buying a low-volume accessory from a supplier in Zhejiang for about eight months. The first orders were prepaid, then we moved to 30 percent deposit and balance before dispatch once the relationship felt stable. Last week I increased the order size because a customer needs a larger batch, and the supplier now wants full payment before production starts.
I understand their risk is higher, but the change landed after we had already agreed on unit pricing and delivery timing by email. I do not want to damage the relationship, and I also do not want to carry all the risk when the batch is now large enough to matter. Has anyone used a middle path here, such as staged inspection payments, a capped deposit, or a short written purchase agreement that both sides actually respected?