The prices for the MyPillow 6843-4 Medium Classic King Foam Pillow can fluctuate due to several factors: Retailer Pricing Strategies: Different retailers may have varying pricing strategies, including discounts, promotions, and sales events. Supply and Demand: High demand or limited supply can cause prices to rise, while excess inventory might lead to discounts. Seasonal Sales: Prices often drop during major sales events like Black Friday, Cyber Monday, or holiday sales. Market Competition: Competitive pricing among retailers can lead to price variations