It's common thing on Chinese online shops, not only when it comes to crypto. If something extremely cheap there, don't even try to order. 99.9% that it will be fake, not working item or something what you didn't odered. But it's good thing that you can open dispute and return your money.
Edit: Nevermind, looks like there is a minimum order buy of 50 units. Definitely won't be doing that.
Yes, because Alibaba is wholesale store for business and you can't buy small number of items there. But probably there is some sellers of fake hardware wallets on Aliexpress too. And yeah, it's very likely that you will get only empty boxes if you will order it.