system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 if color ink is so expensive, how do companies afford to send me so many full color HD ads and coupons in the junk mail every day?
gpt
They probably don't print those on shitty inkjet printers, but on large professional printers that are much more expensive to buy and maintain but  have a certain economy of scale when it comes to raw materials consumed.

Printing these ads and coupons is likely a lot less expensive for them than it would be for you.