Most licensing agreements also deal with the issue of quality. For example, the licensee may enter into the contract conditions that require the purchaser to provide prototypes of the product, mockups of the packaging and even occasional samples for the duration of the contract. Of course, the best form of quality control is usually achieved before the fact — by carefully checking the reputation of the licensee. Another common quality provision in licensing agreements is the method of disposing of unsold products. If stock items are sold as cheap knockoffs, this can damage the licensee`s reputation in the market.