This lady tells me that I nearly forgot to mention that J-List have just launched their
Points system, which means all products get points added to one's account on each purchase. Some products, such as bento boxes, kitchen items, DVDs/Blu-ray discs and eroge get 2x points while they celebrate the launch of the new system. Points can be used on the next purchase with no limitations, but customers can also store 5000 points for an upgrade to 10 worth, and 12000 points for an upgrade to 25 worth of points -
more info here.