u can ask the SA...as i heard they explain to the customers that if u purchase to 40k before 31dec 2012 then u can enjoy 10% off for the year of 2013至2014年度...but i dunno it refers to end of 2014 or 1/1/2014...
but it is true that the vip status has expiry date...then u have to maintain a certain amt of purchase every year to keep ur vip membership...