I'll tell you how to get one for free..buy it from Amazon and sign up for their Credit Card (and they'll give you the $79 as the promotion for signing up for the card).
http://www.amazon.com/AntMiner-U3-Bitcoin-Miner-Version/dp/B00TWK9208/ref=sr_1_2?ie=UTF8&qid=1425784923&sr=8-2&keywords=antminer+u3My experience - I bought one and used it for a few hours and then returned it the next day. It's a huge piece of crap. The included power supply is garbage (gets very hot) and it Zombied after an hour of mining and was near impossible to keep stable. It also never got near 60 GH/s; stayed around 55 at stock settings. It was also pretty noisy for a little miner.
I'm going to be using this at my solar powered garden shed. Luckily I won't be needing the power supply, as I'll run it from a step down converter. Noise is also not an issue as the building is well away from my house.
I'll try out the credit card thing. Thanks for the info!