Having a counterfeit detection pen is not as critical when you’re selling on eBay, because you’ll be taking PayPal as your primary method for being paid. However, if you’re selling things at yard sales and on Craigslist, you’ll most often be accepting cash.
Here’s one of the most popular ones, available at Amazon – this one is the Dri Mark Dual Test – The Original Smart Money Pen with UV LED Cap Counterfeit Detector System, pretty much the one we showed in the video: https://amzn.to/2V7NvFu
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