Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Complete disappointment.

I don't understand why I have to pay $7.99 for just the Seeker book when I can buy Volumn 4, on this same website for the exact same price, that includes Seeker, Origins, and Eclipse. I bought a Kindle Fire so I wouldn't have to find room for more books. But if it's going to cost me $24.00 to get these three books on my Kindle and only $7.99 to buy a paperback of these books I will make more room for books. I'm very disappointed over this unbelievable mark up just to read this book on my Kindle.