Buy PS4 plus below normal price?

Today I looked at ps4 plus credit in a good and I came across something. In addition to the usual card for 3 months of membership, i.e. 24.99 according to the current price range, an older-looking card also hung for three months of membership, but for the price of 14.99.

Now to my question:

Do you think I can buy the card for 14.99 euro or should I buy the card for 24.99 euro. Because I'm not sure because I don't want to redeem it (the cheaper one).

Where did you find it for 14.99 euro?

It hung on all the other cards such as google play credit or iTunes.

Then you can already buy it.