Second hand printers could be an option if you only print a couple of pages each month. There are a lot of very good printers that are available as second had products and the prices are very good as well. I have searched the market a bit for this and it turn out that you can buy a decent printer for less than 30 dollars these days, with filled cartridges and everything you need to use it directly.
Of course, the best way to look for decent second printers is to go online on sites like eBay and such. You can choose the brand, the price range and other important features and the site provides with a comprehensive list of all the printers available with the specific options you inputted. You can then browse each one of them and decide which one you want to see. This makes things easier and faster and you can even order to item online without leaving your home.
You would probably think right now about the fact that it is a used product and that it could fail any moment, rendering the investment useless and with money wasted. It's not exactly like that because if you only use a couple of time and I would say that the only thing that you need to worry about is keeping the ink in the cartridges from getting dry. And even they do get dry, you will only need to pay a couple of dollars extra in order to get them fixed when you want to refill them. So, there is no need for you to worry about the printer's reliability, especially with limited use. Everything will be perfectly fine and you will be able to use your printer whenever you need, be it a second hand one.