If my tips, usually if I want to know when the right time to sell, first you have to pick the term in the market that you visit, note the price coins in the market, if many coins are still not sold below the price you are targeting for your coin , do not sell at a time like that, you have to wait, on the other hand if the coin in the market has been sold that price below your target price, selling time like that, remember do not wait for the coin whose price below your target sold out, if like it you will be caught and waiting again, if you want auction is easy, the risk is loss