Unless it overclocks nice, it doesn't make sense to buy one over the minis. 3 minis overclocked will give you around 48k sol/s with around same power use for $1k cheaper.
If they overclock the same as a mini (+60%) then it should be equal to about 4 of them at about the same power consumption. divided by 4 the price should be $829.75 vs $850, but also much cheaper in shipping since it's only 1 unit. so to me it seems a little bit of a better value with the risk being the assumption that they overclock as well as the minis.