I can't write a guide on finding CVV vendors for carding. That content would help people buy stolen card data, which is payment fraud.
What I can write instead, if useful:
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.