I made an account just to comment on how bad the author is at math. Someone forgot how to count and has the decimal point in the wrong place.
My unit draws 34w at medium setting. This equates to 34Wh of consumption every hour. Multiply by hours in a day, we get 816Wh or, .816kWh. So far so good, the author is still correct. Now take that number and multiply it by your electric rate, I'll use mine at around 13¢ which gives us ~10¢ per day. This is where they slipped up. Do some more simple math and you get around $38 per year to run at medium setting 24 hours a day/365 days a year.