Two more discount codes for Lulu are circulating right now. Use coupon code LULUMAIL305 at checkout and receive $3.99 towards your final shipping cost. This amount is the US mail cost for a single book order. The expiration date listed in the email notice is midnight on May 1st.
The second code is SHOWERS (April showers, May flowers?), which gives you 10% off your total purchase. This one may only be good until April 30th.
See my posting here about book and game suggestions from Lulu.