You can build a miner by buying old Antminer S1, S3 or S5 and then Hotmine X5 or Hotmine X6 upgrade kit from Hotmine.
Hotmine:
http://en.hotmine.io/x5-x6-upgrade-kit-newWith first two (S1, S3) you need to buy separately a BB board (Beaglebone Black) and build a supporting bracket for it.
S5 has BB board.
You can see my review/guide for more instructions.
God, you're killing me. Been trying to get three sets for quite awhile. A few folks here have been trying to get a group buy together with trusted sources. They have a ten set minimum. Daria does answer all emails given 10 days or so. I don't want to keep bugging them until they roll out their cart system if that's in the cards....
If you have a source for individual sets - I'd love to hear about it! I'm sort of surprised at the lack of companies not doing this. The business is already there and waiting to happen. (Isn't that the basis of the "disrupter" economy?)