I think avoiding the risk. Always better to use a credit card direct for a purchase--too much risk to pass it needlessly through PayPal. I don't know what state you are in but an official way to handle the sales tax collected when a merchant does not have a provision for retail tax exempt sales. In Florida the way to handle it is to add the collected sales tax to the legal tax credit line of the tax submission form. I checked with the state tax officials to confirm that. When re-selling you definitely don't want sales tax to be part of your cost of goods sold, so take the credit on the form.
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