maliejandra wrote:It won't work on King of Jazz. I tried.

I found out by accident that it works, but there's a trick to it . . .
Once, I had planned to preorder a DVD from Criterion, but never completed the order, and I left it in my cart. A few days later, Criterion held their semiannual flash sale. I completed my order, and left the yet-to-be-released DVD in my cart to see what would happen. Turned out THEY HONORED THE SALE PRICE ON THAT DVD! I had to wait till it was officially released to get my complete order (so I could get free shipping), but it went through!
You see what the trick is -- you have to anticipate the sale before it actually happens, and have your preorders in your cart beforehand. If you leave items in your Criterion cart, they will stay there for about a week before they are dropped, but you have to keep checking.
Then again, for all I know, it might have been a fluke, and not happen again. Obviously, it's too late to try it at this flash sale, but try it with your preorders at their next flash sale (probably around the end of September or beginning of October), and see what happens. You never know . . .