First and foremost, the chip brand contribute to the cost level. For example, the original MIFARE and compatible one has price difference highly, as well as other compatible chips from other companys.
Besides, the PVC raw material is also essential for card quality, which affect the cost level of whole card. If the card cost is much lower than market level, you are supposed to pay attention if they use the recyle material to save the cost.
Last and but not the least, the procedurement of card production will cause some defective rate, such as chip function defective, punching location un-accurrate, surface scratching, even the dirty etc.
All the above aspects will have an impact for you to select a high quality card.
Writer: Jessica Liu