It's close to a feature I've been waiting for, which is "Buy When Price Drops To...". I want to enter a price and go ahead and let them ship the item to me when it hits that price.

There's a lot of items whose value tends to go down over time, or are virtually guaranteed to go on sale, and they can price-segment me to their hearts content on them if they'd just let me enter the price I'm willing to buy at. You'd think that this signal would have significant value to them. I mean, I get the counter arguments too, but it still seems like they could work some selling magic on this and win back the profit in the end.

Pieces of this are there; Subscribe and Save lets you save money if you pre-commit (sorta, it's easy to drop out of) to buying certain items, and now this "Make an Offer" option... they seem to be working their way up to this, why not go all the way...?