At $120/month you've read 12,000 pages of good enough quality to charge for. If you were to buy 40 new 300-page fiction books you could spend $400; if you were

At $120/month you've read 12,000 pages of good enough quality to charge for. If you were to buy 40 new 300-page fiction books you could spend $400; if you were to buy 40 new professional books you could spend $1000.