The billion coin si without market you can't selling billion coin
if you want selling, 1-2 new exchanger support trade the billion coin, but must pay register 100 dollar, and only maximum withdraw total 120 - 150 dollar, with withdraw every 1-2 day, with beetween withdraw 5-10 dollar

if youre friend promote the billion coin beware don't join, you very dificult selling youre the billion coin balance