Could someone answer some questions I have of this particular miner?

1. Is it possible to buy only one or two units, or must it be purchased at the minimum of 5 per order?
2. How loud is this thing?
3. Can anyone say how legitimate EastShore Mining Devices is? I saw the A4 and other miners on there but I know the ASIC market can be quite scam filled. [EastShore link][/https://www.eastshore.xyz/]

Thanks in advance