The m-clay prices vary. They are usually 350-550g but it also depends on whats on the clay table. Some days the clays can reach a price of 600g + per piece. other days they can be 350g per piece.
100% mallets are around 350 to 450g per piece, 50% mallets are 200-300g per piece. These are current prices that these have been selling for, for the past couple of weeks.