Do you think it's worth buying a lot of Kindle books before the prices go up?

Apple’s iPad has made the publishers (3 now apparently) of some books on the Kindle store demand that the prices should be moved from $9.99 for a best-seller to $14.99.

First of all, do you think this means I should rush off and buy all the books I’m thinking about buying before the price-hike.

And, for extra credit, do you think that ‘ebooks’ are undervalued at the current prices on Amazon, despite no production or shipping costs? [This is the publishers argument, and I can see their point, but I’m broke so it’s not so appealing to me at this point in time!]