I know this one. They make such phantom sales to increase their standing on the platform (ebay, Aliexpress). The platforms do not know it, they put people to make those fake sales so randoms in US and Europe.
In most cases they send hairpins and such stuff, but in this case it happened to be seeds.
If the government response is so heavy handed on this stupid issue (sellers trying to trick the platform), imagine how silly other investigations could be.