Issue with gift card buying.

I just feel like I’m risking my money with purchasing the cards(psn). Twice today I was sold a code and I find out it’s redeemed and I got my money back on the first one And I see the 2nd one has a good reputation. However is there ANYTHING else that can be done to be able to make it less likely? I don’t want to be blamed for redeeming the code and then I look like a scammer. I just want to feel that I have a small Chance for this

You may purchase cards from trusted sellers such as Steam Pumpkin and Uncle Sam. Those trusted sellers have tons of good cards per week, and this issue you reported is less likely to happen.

Thank you.