Here is a great way to sell the book of oblivion in Skyrim
Grab a companion and head to the shrine. Loot the body and give the books to him/her. The companions holding capacity should be like 266 or around that. Then you grab about 299 yourself. Btw you need to join the mages guild. It is very easy to join as all you have do is the first mission and your in the skyrim guild.
Then go to where you sleep. There is 3 of your mage guild members that share the holding quarters with you. Now each of them is a skyrim vendor. Now each of them has 500g. Now instead of going to your normal vendor and getting 700g every 48hrs. You can sell 29 to each of the 3 vendors and end up with 1500g. Now think about this one:
Which sounds better to your ears – 710g every 48hrs or 1520g every single 48hrs?
By doing this tiny where to sell book of oblivion cheat , it should only take around 2 rounds to sell out for every 300 you are holding. Now I have about 8gs that took half the time