When you have a cold or are suffering from allergies, tissues are a must-have, but the cost can rack up when you're buying them all the time. Have you ever considered using toilet paper instead? Here are a few good reasons why you should. We've all grabbed a few squares from the bathroom roll in a pinch, but using toilet paper over tissues is actually a more cost-effective choice in the long run. On average, a box of tissues has 65 sheets and breaks down to about 2 cents per sheet. However, a roll of toilet paper has nearly four...