As many already know, studying for the physics GRE and getting accepted into a graduate program is not the final hurdle in your physics career.
There are many issues current physics graduate students face such as studying for their qualifier, deciding upon a field of research, choosing an advisor, being an effective teaching assistant, trying to have a social life, navigating department politics, dealing with stress, utilizing financial aid, etc.
So..... selling illegally obtained e-books, huh? That sounds exactly like the type of thread that will live a long time on the forum. Everybody will likely flock to your OP and praise you for your sense of ethics and, more importantly, your impressive and business savvy brilliance.