GIFT ~Shiro~ = 116,814
GIFT ~Aka~ = 114,402
GIFT ~Midori~ = 114,001
Thanks murasaki_five for the numbers!
Interestingly, if this is only 1 single with all the songs spread out in 3 versions a-la Yamapi's Loveless, GIFT would have sold around 345k already!
And also, it turns out that Eito week is the not the start of the combined 2 weeks rule usually applied by Oricon at this time of the year, so no going up against Ayu.
Added: Kyuu Jou Show!! (end of 2009) = 302,456 copies