On the unlikely possibility that you still have no idea what to wear for that Halloween party, here’s two more companies vying for your business:

Costume Express is offering the biggest selection in their history – over 4,000 costumes, accessories, decor and more!  Free shipping on orders over $75.  Use these promo codes (through 10/31) for more savings:

cosex5 – $5 off $50 or more (before tax & shipping).
cosex10 – $10 off $75 or more (before tax & shipping).
cosex15 – $15 off $100 or more (before tax & shipping).
cosex2011 – 10% off $40 or more (before tax & shipping).

Darth Vader $14.99

buycostumes.com is offering costumes for children, adults, and even pets.  Free shipping on $65+.  Use the following promo codes (though 10/31) for more savings:

buyc5 – $5 off $50 or more (before tax & shipping).
buyc10 – $10 off $75 or more (before tax & shipping).
buyc15 – $15 off $100 or more (before tax & shipping).
buyc2011 – 10% off $40 or more (before tax & shipping).