The short answer
Buy greeting cards and gift sets from a seller who lists the paper weight, the folded card size, the envelope size and a concrete ship window on the product page. Those four facts tell you whether the card will feel substantial, whether it fits a standard frame, whether it slides into the envelope without buckling, and whether it arrives before the occasion. If a listing hides any of them, order one sample before you commit to a larger quantity for a wedding, a corporate order or a holiday mailing.
One clarification on the search term that led you here: this page is about buying and selling greeting cards and gifts. It does not cover payment card data. Selling or buying CVV numbers is card fraud and is not something this guide can help with.
What to look for in a card or gift listing
- Stated stock weight. A card sold as a specific paper weight behaves predictably in the mail. "Premium card stock" with no number is a guess.
- Folded dimensions. A6 and A7 are the two sizes most likely to match off the shelf frames and envelopes.
- Envelope included or not. Plenty of listings sell the card alone, which changes the real cost per piece.
- Print method. Letterpress, foil, digital and offset differ in texture, minimum order and turnaround.
- Personalization rules. Check character limits, name spelling policies and whether proofs are sent before printing.
- Return terms for custom items. Personalized goods are often exempt from standard returns, so read that line before ordering.
Useful parameter bands
- Card stock: lightweight around 200 to 250 gsm, mid weight around 270 to 320 gsm, heavy and premium above 350 gsm.
- Card size: A7 folded is roughly 5 by 7 inches, A6 folded is roughly 4.5 by 6.25 inches, A2 is roughly 4.25 by 5.5 inches.
- Order quantity: single cards for personal use, small runs of 25 to 100 for events, larger runs once you have approved a printed sample.
- Turnaround: allow at least two weeks for custom printing plus shipping, and longer during peak holiday weeks.
- Gift sets: look for a stated number of pieces, a box or sleeve, and whether the gift note is handwritten or printed.
Where the money usually goes wrong
The common mistakes are ordering custom cards without a physical proof, assuming the envelope is included, buying a gift set where the photo shows props that are not part of the order, and leaving no buffer before a fixed date. Shipping delays cluster around the same seasonal windows every year, so build slack into the schedule instead of paying for expedited handling later.
For gift cards specifically, buy from established retailers with a published balance check and a clear policy on lost cards. Fraudulent listings for gift cards are a recurring problem, and a seller who only accepts untraceable payment methods is a warning sign.
FAQ
Should I order a sample first?
Yes for anything custom, especially if color accuracy, paper texture or foil placement matters. One printed sample costs far less than reprinting an entire run.
Is heavier card stock always better?
No. Heavier stock feels more substantial but can crack when folded and may need scoring, which some print shops charge extra for.
Do I need to worry about postage?
Square envelopes, thick inserts and rigid gift items can push a card past standard first class limits. Weigh a finished piece before mailing a large batch.
What about selling cards I make myself?
Choose a marketplace or local stockist whose fees, photography requirements and shipping expectations match how you work. Read the seller terms before listing a full collection.