I got offered to buy a used Canon 24-70mm f/2.8L I for $900. I know the price of this lens has been fluctuating from 1100-1300 used and with the II that came out I'm wondering if the price of this lens will drop in the next couple of months. I do need the lens but I'm hesitating on whether I can get a better deal (I have bought stuff in the past at a decent price only to see the price plummet after 3-6 months).