You can get free cards at Vista Print (pay for shipping only), but you cannot use the eBay logo without written permission from eBay. There is marketing collateral that you can get through eBay that includes a business card template with the logo. I can't recall off hand where on eBay you can find it, but it's there.
Unfortunately shoes, you can't use the eBay logo without their permission. Create one for your items (or store). I did but closed my store earlier this year. If you sell Clothing for example, use a logo that reflects t6hat category.
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