i would like to see an auction system in the game where you could sell pokemon (for example after getting 4 badges like in Kanto). There will be categories to search by move types, levels and legendary. There would be an option to buy now and bid.And money for sold poke/ unsold poke we could recive at mailbox.

 

Sorry for my English. 

An auction house is already on the devs to-do list, as you can check on the thread below.

 

https://pokemonrevolution.net/forum/topic/159019-dev-to-do-list/

 

As its still in the works, you can do auction here on the forum. Also as a side-note legendaries are not tradable, so wouldnt make much sense to have auction for these.