Peripheral devices such as CD ROM drives, external hard drives and removable hard drives such as SyQuests or Zip drives are very easily transferred between computers. As a result is actually quite rare to find a computer for sale with all the peripherals its former user owned unless his new machine arrived with them all built in. Printers are almost always best bought new. Inkjet printers are cheap because they use cheap, flimsy components and you have no way of knowing if they were handled carefully. One moment of impatience can destroy a good inkjet printer or at least curse you to hearing annoying clicks and squeaks while you work.
Laser printers tend to be more durable.
Since many of them change much of their internal workings when you replace the toner cartridge, they tend to be a safer buy. Computers, software and printers make very poor candidates for landfill. Even when hardware becomes absolute scrap, seek out a technician who will take their carcasses from you and cannibalize them for spare parts.