Their annual (bi-annual?) 50% off sale. All in stock and forthcoming titles are marked down. Details here, and the sale runs through 5/25.
This means you can get two copies of Lightbreaker for the price of one. Handy! So you can give one to your neighbor; so you can be extra sure that the wobbly table has enough support; so you can, well, read it with both hands!
In case you were wondering what to do with the odd chunk of change left over from your tax rebate check.