https://hyperspin-fe.com/store/product/1-platinum-supporting-member/
Platinum Supporting Member - Upgrade Membership - HyperSpin Forum
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https://www.eroprofile.com/p/upgrade
Upgrade to gold member - EroProfile
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https://aiaa.org/get-involved/honors-awards/member-upgrade
Member Upgrade - AIAA - Shaping the future of aerospace | AIAA
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https://www.victoriamilan.com/en/help-center/question/26
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https://tmmwiki.com/index.php/NATS4_API_Get_Member_Package_Upgrade_String
NATS4 API Get Member Package Upgrade String - TMM Wiki
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