Most everyone has the code "nancydrew80" in place for a discount on each purchase. The booths listed here have everything ready to go.
lelliot - Lian's Vintage Series Books - 15% off
piper - Moss-Covered Booth - 10% off
CAL'sBookInn - CAL'sBookInn - 10% off
me - Jennifer's Series Books - 10% off
doc-h - Doc-h's Booth - 15% off
bookventure - Bookventure's Booth - 10% off
nolamom - My Daughter's Closet - This booth is doing a promotion of "buy four books and get the fifth book free." Visit My Daughter's Closet for further details.
Chris from CAL's Book Inn has started a message thread in the promotional forum on Bonanzle. We are limited to four posts every three days (I think) so we can take turns bumping the thread back up to the top. The title of the thread is "Happy Birthday! She's 80 years old and celebrating all week long!" The threads fall down quickly so you may have to go to the second page to find it.