Please put some effort and look the threads around here.
shop.bitmain.com is a good place if you want to buy a Antminer R4 and supposedly they will have S9 in sale again sometime in the future.

canaan.io if you want to buy the AvalonMiner 721.

For you mr. Unacceptable I must say that all the thrash talk for Mikestang is giving me a headache and I can't believe I'm seeing that kind of behaviour from a legendary member..