I highly doubt anything so fancy/gimmicky will be implemented. If you want to buy the cheapest offers first, then click the "Buy Offers" button, and sort by price. Start buying from the cheap end, and keep buying until you get as much as you want. No need for anything fancy.
It would be nice if the sort actually worked, like it used to.
What if a filter was added to only show the cheapest sell offer and the most expensive buy offer? You click buy (or sell), and then repeat as needed.
