Alaska Stat. § 45.50.566
It is unlawful for a person to lease or make a sale or contract for sale of goods, wares, merchandise, machinery, supplies, or other commodities, or services, whether patented or unpatented, for use, consumption, enjoyment, or resale, or fix a price charged for it, or discount from, or rebate upon, that price, on the condition, agreement, or understanding that the lessee or purchaser will not use or deal in the goods, wares, merchandise, machinery, supplies, or other commodity or service of a competitor or competitors of the lessor or seller, if the effect of the lease, sale, or contract for sale, or of the condition, agreement, or understanding may be substantially to lessen competition or tend to create a monopoly in any line of commerce.
AS 45.50.566