Selling Amazon cards in Nigeria can be a viable business opportunity. Firstly, it's essential to understand the market demand. There are individuals who may need Amazon cards for various purposes such as shopping on the Amazon platform.

To start selling, one can explore different channels. Online marketplaces can be a great option. Create listings clearly stating the details of the Amazon card, including its value of 20. Make sure to provide accurate information about how the card can be redeemed.
Another approach is to network within local communities. Word-of-mouth can spread quickly, and by building relationships with potential customers, you can increase your chances of selling the Amazon cards. Ensure that you follow all legal and ethical guidelines while conducting this business activity to avoid any issues.