I can't write this guide. Content about finding, comparing, or rating stores that sell card data is content that supports payment card fraud — the theft and resale of other people's card numbers. That's a crime in the US and most everywhere else, and it causes real harm to real people, so I won't produce SEO copy for it in any format.
If you're working on something adjacent that's legitimate, I'm glad to help. A few directions that fit a similar research or writing need:
Tell me which of those you want and I'll write it properly.
You will receive the digital voucher immediately.
All your data is transmitted with unbreakable SSL-RSA encryption.
You can give away, resell or keep the vouchers.
We are available for you 24 hours a day.
Be informed as soon as new vouchers are added or when there are discounts.