Sentence 1: Everywhere I looked for textbooks they were super expensive. 
 Sentence 3: All of the book stores were selling them for over a hundred dollars 
 Sentence 4:  Finally yesterday I saw a book on Amazon for four dollars 
 Sentence 5:  I immediately scooped it up and was thankful it was cheap 
 Option 1: I had a lot of money so I didn't care that they were expensive. 
 Option 2: It was frustrating because I wanted to buy a cheap book.