You can be glad you did not order a inno miner for 10k which does 30GH and is not even out.
Bitmain wanted to burn the competition and threw out so many D3. They achieved it.
They do the same they did with competition for Bitcoin-asics some time ago- flood the market with their miners for cheap price so ROI is impossible for the other buyers.
Now BM has even delisted the D3, they very well knew what they are doing and stopped selling them now. The bombs have fallen. But not all of them - yet.