I only noticed this in my inbox today, but was first sent on Sept 18. CDJapan is having a limited Sakura Sale on some of their items. I saw some mecha in there when I flipped through the pages.
Some items there however can be deemed sensitive to younger audiences, kindly access at your own risk. Haven't tried buying anything yet though from CDJapan so I don't have feedback about them. Am not sure also as to how long this sale will be going.