The Elder Scrolls IV: Oblivion Tips

When you join the Mages Guild, Fighters Guild, or any other Guild, you can take most of the stuff legally. Then you can turn around and sell them right back to them or other shops. The alchemy items( alembics, mortar & pestle, calcinator, and retort) sell for quite a bit, and they respawn after a while, so you can have an infinite amount of them at your disposal.