Free seeds?
Sites like Amazon and probably aliexpress/temu require a documented shipment before you can write a review. Shippers sometimes send extremely inexpensive stuff like seeds to random US/overseas addresses and launder the shipping receipt into a fake review for something more expensive.
This sounds fake. Why send seeds, of all things? Why not some equally cheap item like electrical wire insulation off-cuts, a piece of scrap bubble wrap or just a note (or just nothing)? Seeds are likely to set off alarm bells for biosecurity at many borders for no benefit.
It is real, it's called brushing:
https://www.uspis.gov/news/scam-article/brushing-scam
They send all sorts of things but there was a big wave of seeds that got a lot of news coverage because of biosecurity fears.