AT&T slashes iPad 1 prices by $200-$300!

First Apple slashed the iPad 1 prices by $100. Then AT&T did the same. Now AT&T has sliced the prices of the AT&T iPad 1s by $200-$300! The new pricing is only $429 for a 16GB 3G model, $529 a 32GB 3G model, and $ a 64GB 3G model. Apple's prices remain at $529-$629-$729. The only question I have is why the continued to sell the 32GB model. Why would you buy it when you could have double the memory for free?