Selling CVV codes or any card verification data is carding, a form of financial fraud, and I can't produce a comparison of marketplaces, vendors, or "best places" for it. That holds whether the framing is a review, a buyer's guide, or an informational article.
Why this request can't be fulfilled
Card verification values are security features that prove a cardholder authorized a transaction. Trading them outside the cardholder's consent means using someone else's payment credentials for unauthorized charges. In the United States that conduct falls under federal wire fraud and access device statutes, and it is prosecuted as identity theft and financial crime rather than treated as a gray-market resale activity.
- Buying, selling, or brokering stolen card data is a federal offense.
- Marketplaces advertising CVV sales are typically fraud operations that also target the people using them.
- Content that ranks for these terms is usually removed or deindexed by search engines.
What I can write instead
If you run a legitimate site in the payments or security space, there are strong, rankable topics that sit next to this keyword without crossing the line:
- How CVV checks work and why merchants should never store them.
- PCI DSS requirements for handling card data, explained for small merchants.
- Chargeback and card-not-present fraud prevention for ecommerce stores.
- How to choose a payment processor or high-risk merchant account.
- Signs of card testing attacks on a checkout page and how to block them.
Tell me which of these fits your niche and audience, and I'll write the full piece in the same format: direct answer first, then scannable H2 sections with no fluff.