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Publishers offering "Medium Rectangle Ad" spots
A medium rectangle is the 300x250 pixel banner, the most common ad size on the web. It usually sits in the sidebar or inside the article text.
How it's sold
Most of the 394 publishers selling it run it on their own site, from Pubfinity to smaller blogs, and advertisers book through their sales team, a self-serve form, or a DSP. It is one of the easiest sizes to buy programmatically.
Typical price
950 USD per month is the median published rate, based on 14 rates. Where publishers sell it by impression, the median is 26 USD per 1,000 impressions.
What you supply
One 300x250 image or HTML5 file. Many publishers also ask for a backup static image.
Best for
Traffic and awareness campaigns that need wide reach across many sites.
Before you buy
A 300x250 above the fold performs very differently from one at the bottom of the page, so check where the ad appears.