The Sony PRS-900 is currently on sale for $349 from Amazon.com until May 22nd, a price drop of $50. Shipping is free.
Sales and Discounts
eBook Sale: Several Coupon Codes For eBooks.com
Here's a list of coupon codes for eBooks.com, along with a list of best sellers, recently added titles, and price drops. More ebook sale coupons will be added periodically as they become available.