*Including of Packing, Delivery and Installation
*If client choose to pick up, we will offer HKD2000 discount in additional
 
Grade SSS (出現概率 1%)   
Grade SS (出現概率 3%-5%) 
Grade S (出現概率  6%-10%)
Grade A (出現概率 11-%-20%)
Grade B or below (出現概率 80%)