Hardly - they have a company and Inventionland
on History Channel
and a business model to make money from ideas without implementing them.
Besides that, what do you mean by 'I can sell my ideas?'. The idea is nothing - everybody might have some ideas. Actually most of the ideas are not mentally 'generated personal' images and solutions in the sense we used to perceive them. They are merely heuristic inferences, or far-reaching but elementary in essence deductive inferences, or inferences by analogy - there is nothing so much personal there, let alone personal property to be copyrighted. They use public knowledge for the inference, not not say that somebody else might have 'seen' that inference path before you.
To design business models and transactions is very much different. In a well designed business model or one-time transactions everybody should have some benefit. When you propose similar things on the market always try to find what will be the benefits for the buyers.
If you want so much to sell ideas, make your feasible business model - how the process of providing ideas to the public will make money for you and for your business-partners.
BTW not all ideas are fit and appropriate for sale. Actually only the ideas that have special value could be sold to the people appreciating that value and willing to give their money for that.