Even with 2FA required, it does not guarantee that there will never be another scam. Please protect yourself by using a payment method like PayPal Goods and Services.
Use your discretion when using payment methods that don't offer buyer protection like PayPal Friends and Family, Zelle, Venmo, Google Pay or GPay, CashApp, Crypto, among others. Unless you can be 100% sure that you are dealing with the person you know by some other way like a text message or phone call, you are putting yourself at risk.
Another thing that the scammer did was offer the same chips to other interested members that posted in the sale thread via PMs saying that the first person didn't pay. Perhaps send a group PM to make sure that is not occurring before you send payment.
I can't disclose everything publicly for security reasons but I want everyone to know that I am doing everything I can on my end to help stop this from happening.