Let jump straight into the question .
i sell bitcoin for amazon gift card on paxful and the trade went pretty smooth the gift card balance was there , but the problem is that i cannot redeem the card the owner said until i release the bitcoin , after that he unlock the code .
Should i release my bitcoin ?
The trouble with using such sites is that the seller demands that the funds are released as soon as they send the Amazon codes. This means that if anything goes wrong with the code then you're out of luck (and out of pocket).
The reason that these cards are being sold so cheaply is probably because the cards are being obtained shadily and therefore there is reason to be concerned that the card won't work after a while or that Amazon block your account for applying GCs that were illegally obtained.