I'd be interested if the price enabled profit, but 8btc is too much, thb this ad is really better suited for someone trying to get into mining and keen to learn the hard way.
If you have free electricity and calculate 15% difficulty increases, BTC 8 is about what this unit will generate in 365 days, so it's not such a dishonest pricing. The main selling point is that the unit is tested, working and available for shipping right now, it's not a pre-order of some vapourware. Not a bad deal.
I paid BTC 115 for the same unit, last September. I wish I would have bought it for BTC 8 ;-)
Screw you Hashfast, for scamming your customers by shipping out this equipment with 5 (five!) months delay and not honouring refunds
Well I wouldnt say its not vapourware but okay.
Relating to Overclocking, I think the unit is overclocked but I could be wrong.