How to sell omega items

Start another omega building for free.  Or several of them. Each will ask for just one omega item to upgrade at this beginning stage. If you have several of these you should be able to get rid of unwanted omega items just by upgrading. Then demolish the building and do that again. Eventually as you progress in the game you will want to go for 64 omega buildings. My game is level 80 and fully expanded. I've had no problem getting rid of unwanted omega items just by upgrading omega buildings that I keep. But demolish them after just one upgrade if you really don't want to keep them. The omega cash I use in the game is helpful and when all 64 of my omega buildings have been fully upgraded I will get 12,800 dollars daily to spend in the neo mall. 64 Omega buildings may seem like a lot but I still have 290+ residential buildings to upgrade to epic for the epic tokens which is plenty.