The more cubes you give to someone on sale , the less cubes they are likely to buy not on sale . Dangle the carrot of a sweet deal on cubes and people will be salivating to cube their gear on sale day . Many of them will buy cubes anyway because they were hyped up . Of the ones who don ' t buy cubes at full retail after they sale is gone , it ' s still likely they will buy cubes at full retail later because they are still in need of cubes . It would be great if there was not just a limited quantity , however , it ' s very likely that what they ' ve done here has increased their profit over offering an unlimited quantity . While I would certainly like to buy cubes on sale , I can ' t fault Nexon for making as much money as they can .