In my opinion you are too ambitious.
PHORE marketplace has a chance to find its audience in a small business and develop within 3-5 years. Then everything will depend on the legality of cryptocurrency
Amazon also tested the addition of cryptocurrency (Bitcoin, ethereum, etc.), but for the time being abandoned the idea of integrating cryptocurrency on its platform
Where did you read this news? Amazon will not advertise cryptocurrency. Also, Amazon will not risk, since the cryptocurrency market is very volatile.