Our Hardware Machine, BTCO Poseidon is hardware lock. You pay half on website and half on delivery. After the hardware is received, you send us Poseidon unic ID and pay the second payment step and we will send you the unlock serial key.
No way im buying anything with such kinds of locks. Even if this is legit and not a scam, whats to say that there isint any timelock and later they asking for more money to renew the serial?
On the flip side, there is no way a hardware vendor, especially in bitcoin world, would ever agree to such terms. Theres no shortage of people trying to get their hands on it for half the price and then reverse engeneering the design/firmware or just cracking it.