How much should I pay for the broken toilet tank cover in Home Inn?

At present, most of the products are produced by water tank cover and water tank together, that is to say, a water tank cover is matched with a toilet. However, in the later stage, some products can be directly equipped with water tank covers, or they can be equipped after grinding. For manufacturers, a water tank cover is not expensive at all, but once it passes through the merchants, it is likely to cost a high price.