Never EVER had anything less than a perfect experience with Lulu. I have over a dozen books for sale, I publicize and promote them and they sell regularly. I am doing two more now. For me, this is the only way to go. No hidden fees, no interference. Strictly professional all the way.
I also make sure let people know when Lulu has a sale on books. If you don't check to see the discounts - sometimes up to 30% - then you are missing a valuable sales tool.