ThinkGeek cuts up to 50% off a selection of hoodies and jackets, with prices starting from $17.99. Shipping starts at around $6, but orders of $75 or more qualify for free shipping. Offer ends October 29.

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Some best bets:
-- Men's Zombie Hoodie for $24.99 ($25 off)
-- Men's Iron Man Costume Hoodie for $41.99 (pictured, $18 off)