I'm selling the following books which I used to prepare the GMAT. They are all in rigorously IMPECCABLE state. No underlining, no annotations, no folding, nothing.
(1) Princeton Review's Cracking the GMAT, 2007 edition : 30 EUR (42 USD).
(2) The Official Guide for GMAT Review, 11th edition : 15 EUR (20 USD).
(3) The Official Guide for GMAT Verbal Review : 10 EUR (14 USD).
Those books bring luck : I scored more than decently using only those for preparation, and I was admitted to my top choice schools. 
We can arrange for a meet-up place in Belgium, or I can ship them overseas for an additional fee. I'm willing to let go the whole lot for 45 EUR (61 USD).
(1) Princeton Review's Cracking the GMAT, 2007 edition : 30 EUR (42 USD).
(2) The Official Guide for GMAT Review, 11th edition : 15 EUR (20 USD).
(3) The Official Guide for GMAT Verbal Review : 10 EUR (14 USD).
Those books bring luck : I scored more than decently using only those for preparation, and I was admitted to my top choice schools. We can arrange for a meet-up place in Belgium, or I can ship them overseas for an additional fee. I'm willing to let go the whole lot for 45 EUR (61 USD).