I got a sad story for you.
There used to be this company, Butterfly Labs, they were going to come out with the first ASIC miner and make GPUs obsolete...
I gave them my money for a couple of foot warmers. The day I got them, I had to unplug the Christmas tree lights because a breaker popped when they started up and then the same night one of the PSU's cooked itself while I was at work which woke my wife up with that terrible ozonated burning plastic smell. The next morning I set them up on the kitchen counter where we had a 20A service using an old computer PSU and the paper-clip trick so I could free up the circuit for the Christmas lights. By this time, she was a little upset with my new hobby but she tolerated it because she loves me

I only got one, I was working out of state when it arrived. My lady got it set up, configured and on the pool within 4 hours after it hit the doorstep. We made the USD back finally...the BTC, not so much...
I got mine in early November 2013 and to add insult to injury, the (goods and services) tax came to more than the value of the Bitcoin I could mine with it over its lifetime (at the time it arrived) but I paid it anyway because I knew there would be no refund. I mined until the price of electricity was more than the value of Bitcoin being mined and sold the pair and the PSU to some local kid for $300. If memory serves, I mined just over 1 Bitcoin with the pair but had I spent the money directly on Bitcoin at the time of purchase, I could have had ~60 coins plus another 2 for the taxes and I don't know how many for the 24/7 @ 600W electricity costs - oh yeah and the stories that nobody is interested in.