Too expensive, 3.5BTC is over $2100
If you are going to price in BTC you need to match $1900-2000 for the Dragon with the LCD screen, for the one without you are looking more at $1600-1800 price point. Especially for a newcomer
You think DHL/UPS is shipping free for this guy.
He will sell it with loss for that price, but you won't understand that as a small miner pretending to be big.
Your btc address reveal that you are a noob.

Thank you for your explanation.I am trying my best to shorten my customers' cost-recovering time then get profit soonest.When i get my reputation,i will make money:-)