Anyone on top of what this merger will mean for search marketing prices?

I have found consistently that Bing charges more per click, for high rankings over a number of keywords, than Yahoo. Now that they are merging into the Microsoft model no one seems to know what pricing medium the search marketing advertising will use in determining how much you'll pay per click.

My thoughts are that there'll be a huge hike in cost per click for your keywords.

Anyone else have thoughts or knowledge on this issue?