1 From the secondhand account, the reader gets more background information about what the Oregon Trail was. 2  From the firsthand account, the reader gets a better understanding why it was so dangerous.
Printers generally age more by the number of pages printed rather than by pure years. The rule of thumb has always been whatever the recommended volume is (for instance 5000 pages per month for a P3005) multiplied by say five or six years so about 300,000 pages would be the life expectancy of the printer.
Let's examine some facts. According to InfoTrends, a consulting firm that tracks this market, an average home inkjet printer costs about $100 and has a life expectancy of four years ($25 a year). If you include the average annual running cost for ink ($85) and paper ($6), you get a total cost of $116 per year.