Truth be told, I, too, found that to be odd when I saw the dates of the subscription; so you have my vote.
I think it creates more of an incentive for people who, like us, missed the subscription at the beginning of the year. The exchange rate is killing me enough, so I am already paying twice, but thinking it from a '2008' perspective, I am paying double for half.
...but looking forward to finally rolling up my sleeves and playing with CB and using on my site, so I happy nonetheless...but you point will hopefully be well-received and well-taken.