Noob here after reading few pages im lost, Can i confirm few things:-

1. bitmain.com.my is a scam? buy direct from bitmain.com?
2. why Antminer D3 is more expensive than s9? when the hashrate only in GH where the later in TH?
3. Is it because it can mine altcoins too like ethureum where S9 only Bitcoin?
4. How to buy the Antminer, i saw 11st is selling s9 at 14K

Based on TNB 38 sen per Kwh, using S9 this is my earning



is this correct? If using D3 profit will be higher?