Sentence 1: Travis wanted a new bike. 
 Sentence 3: So he decided to buy a used one from someone online 
 Sentence 4:  And after receiving it, it was a great deal 
 Sentence 5:  Travis decided to buy more used products 
 Option 1: But all of them he looked at were too expensive. 
 Option 2: He bought a brand new one so it wouldn't have any problems.