You can selling back your old coursebooks to SGU's Online Bookstore if:
1. You are already passed the OFSE
2. You do not need the coursebooks for your thesis
3. Your books are the original books and still in a good condition
4. Your books have the same edition with the coursebooks listed on the academic year
If so, then SGU's Online Bookstore will paying back your coursebooks 60% cheaper than the price shown in the coursebook listed.
Please contact SGU's Online Bookstore for more infos.