The purpose of creating the hardware wallet in the first place is for the safety of your consumers digital assets, why are you allowing people to buy more than 2-3 pieces of your hardware wallet at once.
How will they know between those buying in bulk and the buying by little by little, what each everyone is doing with it is what matters, my organization where I work may require from me to buy and they give their employees as a gift, a scammer may be buying 2 on each order tokeep accumulating them, we can't know the intention of every buyer, as scam is very hard to control.
The goal for some of them is to turn to scrapers and sell for better money on the market, but when it comes to hardware wallet some will buy huge quantities of these wallets and go work on them.
They will do their tricks on the wallets and resell them to the world, waiting for the buyers to start depositing assets on the wallet and rugpull them later on.
The solution here is for anyone interested in buying to buy directly from the source, which are the producer and not from the merchants, distributors, or agents and retails.