Ends 28th February 2010 this BOTW promo code entitles you to a massive 50% off your submission.
Simply enter the voucher code:
YOUSAVE50
At the payment page.
This works on both the business directory listing and the blog directory.
If that doesn’t work try
NEWYR
This one gives you 20% off.
Neither worked for me – posting 2/24/2010. NEWYR is reported to have expired end of january. Other one did nothing to change price, but no error message