Antminer-buy.com is a scam
Anything linked to Tizen Hardware is associated with this website also.
They come out looking good, they call you, confirm order. Few days later you get a tracking number that works on a legit tracking website.
Then a week goes by with it sitting in a China and you get this reply when you inquire
“Dear Valued Client,
Greetings from Tizen Hardware!!
This is inform you that your product was hold by custom department , so there would be one time custom clearance fee for 473 USD which you have to pay for the clearance of your product
Based on my experience, if anything is held by the customs department then it's not going to be the sending company telling you to pay for it. The shipping company will contact you by phone and invoice you instead.
If they ask you for any clearance fees they're probably just trying to screw you out of some more money before they ignore all your messages.
All those sites selling miners recently have been scamming a lot of people. None of them have turned out to be legit so far, so it's probably best to avoid these sellers altogether and buy from an official source instead.