This is Target's official return policy. It is more stringent than most stores, IMO:
refund/exchange policy
Most unopened items in new condition returned within 90 days will receive a refund or exchange. Some items have a modified return policy. Those items will show either a “return by” or "return within" day range under the item on your receipt or packing slip and in the "Item details, shipping" tab if purchased on Target.com. Items that are opened or damaged or do not have a packing slip or receipt may be denied a refund or exchange. All bundled items must be returned with all components for a refund. Some items, such as gift cards, are never returnable.
exceptions
Returns and exchanges without a receipt may be limited,other restrictions may apply.
Open music, movies, video games and software cannot be returned, but may be exchanged for the same title, for the same or different gaming platform.
Open or defective collectibles (e.g., sports cards, special-edition Barbie dolls, porcelain dolls, action figures and die-cast cars) cannot be returned.
The following items must be returned within 30 days: netbooks, laptops, eReaders, tablets, cameras, camcorders, digital audio players, GPS systems, video game hardware, personal DVD players, and no-contract cell phones.
For these items purchased between 11/1-12/25, the 30 day refund period will start on 12/26.
Halloween costumes and accessories must be returned by 10/31.
Different return policies may apply for contract cell phones.
~Who in the world am I? Ah, that's the great puzzle~ Lewis Carroll, Alice in Wonderland