The simplest and cheapest way to purchase an OnLineTexts.com text is, of course, online. With Visa, Master Card, or American Express your students can subscribe to and start using the assigned text in under 5 minutes.    Many professors don't want to bother with campus bookstores so they simply give their students our URL and leave the rest to them. The process is easy, fast, and safe, and familiar to most students from prior e-commerce experiences.