BuyCostumes cuts up to 92% off a selection of The Nightmare Collection Halloween Costumes. Plus, take an extra 20% off via coupon code "WK20SXOTV". Shipping starts at $4.99, but orders of $75 or more qualify for free shipping. That beats our mention from last week (which saw up to 88% off + 10% off) and is the best deal we've seen on these costumes. (For many options, it's at least half the price you could expect to pay elsewhere, although many sellers charge hundreds for these styles.) Coupon ends October 15. A couple of best bets, with prices after coupon: