XEM has Really High network Fees and some surprises when you purchase nem or xem and move it out of a exchange you will missing 15 Xem you will be charged when you move it to a wallet.
Most folks are surprised and have complained the fees are too high and most are unaware till it happens also the network fees are also very high to move 4 NEM out of you wallet it costs two Nem im turned off by the fees might as well go back to the bank i sold all mine