Who are the manufactures currently selling chips  and in what quantities ?
[...]
Anyone just selling. Would like to get some chips to evaluate developing custom PCB and cooling.

Please contact Janet.Zhao@bitmain.com or info@bitmaintech.com for chip quote.

Bitmain did respond to email overnight. No chips to sell at the moment, but they may let me know if anything comes up.

A3 ASIC and A4 ASIC design already. Both in 14nm and already taped out with over 60% power saving over the 28nm generation. Anyone interested in those are free to contact us.

[...] purchase of sample chips to design your own miners.
If interested please contact us at sales@sfards.com.

We have reached an agreement with Sfards Technology to be its North America ASIC chip sales representative. We will sell Sfards Technology’s latest 28nm FDSOI ASIC SF3301 (dual mining) chip samples in www.dualminer.com web store in the coming August.

http://www.dualminer.com/SFARDS-SF3301-40-chip-package_p_34.html

we have RockerBox ASICs to sell.

We have 1300 Sptech Hammers in the tray still sealed.