I using half.com. And I have just started using recently. I haven't had any good results yet. I am selling few textbooks for now for my brother. I half say I having more successs selling odds and ends at ebay.com. Even though I am not selling my actually custom economical bookmaking I do. But than again, I haven't had company publish my book and had done professionally done. However, its a slow but surely good process. I hope this helps and answer your question.
Hi Alicia, I am afraid I can't answer your question but I want to say I hope someone answers it because I am curious and would like to know too. Thanks for asking it. Maybe tomorrow we will get an answer. (See my blog)