Read the kncminer thread, they are screwing people over, will probably get delayed further, they are giving them the chance for a refund or a 3th/s franken-miner thing with older tech, which isn't that good of a deal.

Meanwhile they are mining and getting like 500k usd a day, with the pre-order money.
I wouldn't invest in them anymore, they broke their promise (network protection plan), and I seriously doubt they'll deliver Titan miners on schedule (if at all!)

Right now, only asic I'd buy would be the gridseed 5 chip miners, which can be found in stock for 125usd if you look hard enough.