All promotional materials disseminated in the course of the promotion shall bear the representations substantially to the effect of the following: "Twisted X will contribute to Council six percent (6%) of the purchase price from the sale of each Twisted X 4-H Shoes during the charitable sales promotion. The promotion shall last until June 30, 2027. Twisted X will make a minimum contribution to Council in the amount of $25,000 each year during the charitable sales promotion."