Summary: I agree with others regarding operating costs - exorbitant. If you require an actual paper tray (other than the pull down door) it (they) will cost extra. You cannot have a large capacity tray (500 sheet) without also purchasing the smaller 250 sheet tray.
Summary: This printer, though very low priced and good quality printing, is a great introduction to the fine world of HP's Smart Chip Technology. This is where the cost of this printer skyrockets. How this works?
Summary: There is no paper tray on the 2550L, and when I went to purchase a paper tray (an expensive accessory) directly from HP, they were "out of stock". Also, the printer oftern makes loud noises when performing internal maintenance (not good to suddenly wake up to in the middle of the night).
Summary: I have had this printer for about 3 months now and have already had to buy a $175 drum and countless toner cartridges. And I don't print anywhere near the maximum output of 30,000 pages per month. I might do 2500 a month.
Summary: I bought one of these and packed it up to return tonight. There is no paper tray. The only way to feed paper is by opening the front door and sticking in sheets of paper. Then they hang out the front. The paper tray is an option that no one has in stock. I am going to swap for a 2550N.
Excerpt: I wanted to write a review about this product because this printer is my office enemy!! The quality of the printing, once it has finally done the job, is not bad but it does not merit the amount of fuss and noise this printer makes to get the job done!