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How are we defining "Personal goods"?  Is there an IRS definition of that or prohibition on a business selling personal goods?  Our COGS is zero, unless we include warehousing and booth space in the cost of those items, which I don't think is legal.  We have hundreds of items from jewelry to furniture, books to 1930's and 40's household items.  Way too much to store in our home, and it would take months to go through everything and determine a value, and it will take months/years to sell it all.  Yes, this is an economics question.  But is there any way to deduct the cost of the storage and/or the booth at the antique mall?  Thanks for your assistance so far.