One option - buy it from official reseller. But usually resellers have higher price than buying directly from Ledger.
You pay much higher price if you expose all your information, address and phone number to scammers.
I also checked some prices resellers offer and there is no big difference with prices manufacturers are showing on official website.
To be more precise I compared the prices from official Ledger website with official reseller in Croatia and prices are exactly the same, but I would never buy Ledger again or recommend it to anyone.