Cheapest? It's lower price by like 200 , so not bad, note it's only 92mm fan.
Deal of the day: Deepcool GAMMAXX AG300 CPU Air Cooler I Intel - LGA1700/1200/1151/1150/1155 I AMD : AM5/AM4 https://amzn.in/d/5fRb5av
If looking for something better, which I would recommend for this perticular cpu...