Upload & Sell: On
Keep dreaming that it will be 12-1500.
Besides, the original I believe was much higher than its current price. It's important to remember that the original is an old lens, and that the price currently is reflecting the vintage, and also the impending new lens.
Traditionally, Canon had their L grade mid range zoom (e.g. 28-70L) and WA zoom (e.g. 17-35L) priced in the same range. However, currently 16-35L II is $1,700 while the new zoom is $600 more, in fact it is introduced in the price bracket of 70-200 f/2.8 IS II. That in itself is a departure from the the traditional price relativity. Now, one could assume the 24-70L II price will soon start to slide down to the 16-35L II price, so things will be back to "normal", however, I am not so sure of that.
Either way, my feeling is that you shall see $150 rebates on that lens by Christmas, so even if you are inclined to blow $2,000 + on a mid range zoom of that type, might as well wait a couple of months for the price to drop some, and also there could be early glitches with the lens, firmware updates, recalls and all that stuff which has become kinda common with the latest offerings by Canon.