Short answer
You cannot sell CVV numbers under U.S. law. A CVV is a 3-digit or 4-digit card verification value. It is printed on a payment card or stored in a digital wallet. The code helps prove the card holder has the card. Selling a CVV is card fraud. In the United States, 18 U.S.C. ยง 1029 covers access device fraud. A first offense can bring up to 10 years in prison and a $250,000 fine. State laws add more charges.
What a CVV is
Visa calls it a CVV2. Mastercard calls it a CVC2. American Express uses a 4-digit CID. The code is not the same as the card number. Merchants use the CVV to check that the buyer has the physical card. PCI DSS Requirement 3.2 says merchants must not store the CVV after a transaction is authorized. That rule applies to greeting card shops, gift shops, and any other business that takes cards.
Why selling a CVV is illegal
Card networks and banks treat the CVV as an access device. Selling it helps someone make unauthorized charges. That is fraud. The FBI's Internet Crime Complaint Center logs card fraud reports. The FTC says stolen card data can lead to identity theft. A person who sells a CVV can face charges for wire fraud, identity theft, and money laundering. A buyer can face the same charges.
Penalties and real cases
Federal sentencing guidelines raise penalties when the loss is high or the scheme has many victims. The U.S. Department of Justice has prosecuted carding rings that sold CVV data on dark web markets. Some cases involve tens of thousands of card numbers. A conviction can block you from holding a job that handles payments. Banks can close your accounts. Payment processors can ban you for life.
If someone asks you to sell a CVV
Do not do it. Do not send the code. Do not post it online. If you have a card, keep the CVV private. If someone offers to buy a CVV from you, that person is asking you to commit a crime. You can report the offer to the FBI's IC3 or the FTC. If a charge appears on your card, call your bank. The bank can cancel the card and send a new one.
Legal ways to work with cards and gifts
If you run a greeting card or gift shop, you can accept cards. You can sell gift cards. You can sell unused gift cards on some resale platforms if the platform allows it. You can sell greeting cards, stationery, and gifts online. You cannot sell CVV data. You cannot buy CVV data. Those acts are not a business. They are crimes.
Bottom line
There is no legal market for CVV numbers. The answer to 'want to sell CVV' is no. The act is fraud. It carries prison time and fines. If you want to make money in the greeting card and gift niche, sell cards, gifts, or legal gift card resale. Keep card data private. Follow PCI DSS rules. Report fraud to the FTC or IC3.