I don't share scam deals.
While I can't confirm exactly who the seller is (it appears to be a company in China), this one definitely isn't a scam. And if you decide to return your purchase for any reason, it'll be super easy since it's fulfilled...
Answers vary but for now, and who knows what will ever change, DJI is not allowed to bring in drones only, so far, not sure on parts. I've got the Mini-3 Pro and earlier this year they said they were no longer offering the refresh program...
DJI include a few Class 1 stickers in the box so if your does turn out to be over the magic 250g you can still fly, just with slightly more restrictive rules. But as police don't routinely carry scales, and will likely only get round to weighing...