Note: The accepted formula that Auxiliary Mode Inc. uses to calculate the CPM range is $0.45 USD - $25.00 USD.
The range fluctuates this much because many factors come into play when calculating a CPM. Quality of traffic, source country, niche type of video, price of specific ads, adblock, the actual click rate, watch time and etc.
Cost per thousand (CPM) is a marketing term used to denote the price of 1,000 advertisement impressions on one webpage. If a website publisher charges $2.00CPM, that means an advertiser must pay $2.00 for every 1,000 impressions of its ad. The "M" in CPM represents the Roman numeral for 1,000.