If they are scamming, they are doing a lot of it...

https://blockchain.info/address/158AsiDkfR8NJohdq6VvZEwyG84K8Xb2PM

via http://www.aliexpress.com/store/product/New-arrival-Avalon-230GH-s-asic-bitcoin-miner-mining-BTC-hardware-2014/340830_1580914567.html

Looking forward to hearing any feedback. Thanks.