If you haven't decided on what you want to be for Halloween this year, spend some time at BuyCostumes.com, the largest online Halloween retailer, for a bit of inspiration. BuyCostumes has something for everyone, including a large selection of adult superhero costumes. Plus, you can use code ZOMBIE50 to take 10% off $50 or code BEWARE10 for $10 off $65 for additional savings. Check out the Batman Dark Knight The Joker Costume, normally $44.99 and now $29.99, the Reversible Clark Kent/Superman Costume (pictured) is $38.99 and the Star Wars Princess Leia Slave Costume is reduced from $59.99 to $44.99. Shipping starts at $5.99 and there's no sales tax (except NC, NY, WA, WI). Spend $40 and use code SNOWFREE for free shipping.