Is it permissible for retailers to buy X cases of beer at a discounted price, and in return, the retailer receives X amount discount/credit on hard liquor and other discounts?

If the distributor is attempting to exclude a retailer then it would not be allowed.  If you want product A then you have to buy product B scenarios is illegal.  Distributors must treat all similarly situated retailers the same. 

Matt Tanaka

Matt Tanaka is a digital marketer who lives in Chicago with his beautiful wife Laura and their incredibly lazy French Bulldog, Bento. He is an experienced writer, obsessive planner and firm believer in the ability of digital tools to connect brands with their audiences.