It's best to take the item in. They measure by weight & dimensions so it depends on what it is. Call place item wz purchased see their policy, most give return labels that should cost Nothing. Most tv items used for cable, movies, internet etc.. Cost Nothing! be sure to get and hold onto the receipt they give you, they'll be unable to reprint another one. Keep all unconnected cords, plugs they'll only give them back to you. I seriously doubt if they'll be able to answer that question on the phone.
It may depend on the weight of the item along with shipping. I don't have actual pricing, but you may want to call them to find out specific pricing and any other information regarding that.
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