Not paying for the printer - constantly paying $30+ for the cartridges.
Different cartridges have different amounts of ink in. A low capacity cartridge stores less so more materials are being used to store the ink. Volume economies in the supply of any consumable are common yet not universally applying. Saying "what you're paying $30 for cartridges?" is meaningless without some consumption/capacity figures to back it up with.
@ unokitty
HP are one of the worst manufacturers for producing bloated software/drivers. One can offset this a bit by looking on their site for 'basic' drivers which are usually between 10-20% of the size of the 'full' driver, but I simply avoid HP because it seems to be their general bad habit.
---
I'm surprised that a hardware reviewer hasn't done a thorough "mother of all printer reviews" job where they actually check the consumable yields themselves rather than relying on manufacturers' statistics. Throw in some power consumption stats for load and idle as well as a "how long will it take for you to start saving money on this printer" type statistics, and I think that people might be quite surprised at the conclusions. Techreport is doing what I consider to be a thorough SSD durability study.
I think a lot of people go through the following process:
1 - Buy the cheapest, nastiest inkjet they can find
2 - Discover that the printer manufacturer's cartridges cost money too
3 - In light of '2', buy the cheapest, nastiest cartridges they can find for the printer
4 - In a possible combination of not using the printer much and cheap ink that blocks the heads, they now have a dead/semi-functional printer in a year or two
5 - After advice from a friend, they buy a laser printer for 4-10x the price and say "inkjet printers are rubbish".
As usual, most people don't research or seek decent advice before making a purchasing decision. Inkjet printers require more care and attention, and there are some very dodgy value printers out there. There are dodgy value laser printers out there as well (in comparison to decent inkjets and/or other laser printers). Spending more does not necessarily mean better value; using a manufacturer's own stats, I found that a £200 inkjet and a colour laser for about the same price both represented better value even when the total pages printed reached 50k pages. The printers involved in those statistics were sold for between £175 and £875. Of course, the question for any printer is "will it reach that sort of milestone". The £875 one most probably would, and probably would start delivering better value if I pushed the yields up to 100k or beyond, but what I'm trying to say here is basically "horses for courses".
Most people (IMO) also forget that while they don't use their printer very often, when they want to use it, they want it to work NOW. I advise people to print something at least once a month to keep an inkjet ticking over properly, so decent ink doesn't start drying up and clogging heads. I'm definitely in the low-printing-capacity category, but my last inkjet worked fine for 8 years then I gave it away because I needed more features.