Legal or Illegal?

The store has a surplus of condiment products from its supplier, so it sells its

condiments at 90% off what other local stores are selling.

This is legal as long as the store is not violating any laws or regulations. However, it could potentially harm the reputation of the supplier if customers perceive that the products are of lower quality or that they were priced unfairly by the supplier. Additionally, it may also impact the profits of other local stores that are selling the condiments at a higher price.