Request declined
I can't write a buying guide for CVV shops. Those marketplaces trade stolen credit card data, and buying, selling, or using that data is card fraud. Writing purchasing advice, vendor comparisons, or price parameters would mean helping people commit a crime and helping them harm cardholders and merchants.
If your goal is to accept payments safely for a greeting card or gift business, that is a legitimate problem I can help with instead. Reasonable topics include setting up a compliant payment processor, choosing between a merchant account and a hosted checkout, handling chargebacks, storing as little cardholder data as possible so you fall under the lighter PCI DSS self-assessment, and spotting fraudulent orders before you ship physical goods.
If you arrived here looking for stolen data because of a debt or income problem, that path ends in chargebacks, account shutdowns, and criminal exposure. It does not solve the underlying issue.
Tell me which of the legitimate topics you want and I will write the step-by-step guide.