Has anyone heard of 'Mandoemedia'?

their site

http://www.mandoemedia.com/ids

There are asking for images at $3 a piece.  Is that a rip off? or a good offer?

Company offer-
"We are interested in purchasing some images from you direct not through Creative Market. We are a digital signage business and our customers create content to show on their screens. We are not looking to buy the exclusive rights to the files, you can keep selling them as you currently do. We simply want to do a bulk purchase and have the right to use the images in our software, where our customers can use them to display on our screens and media players, but cannot download or re-use them outside of our software. It is display only. "