Please go to Amazon and buy these anti-counterfeit pens (they cost under $10), but will give peace of mind. Sadly, there have been reports of people giving counterfeit money and not only being able to buy the product, but getting change back too. My friend had a potential buyer who was suppose to meet up with. Everything was fine until she told him no large Bills. After that, he ghosted her. The other situation is that you are being set up for a **bleep**. Anyway, I don't like the sound of this buyer and i would definitely NOT meet up with this person. Sounds too too fishy.