Bitmain has released (and already sold out of) its Antminer S15 model traditional ASIC Bitcoin miner. At a price of $1,475 per unit and a per-customer limit of two, it is comparably one of the better bargains as mining hardware goes.
It clocks up to 23 terahash per second, meaning that 3-4 units would be required to match the performance of Bitfury’s Tardis, which goes up to 80TH/s. The Tardis, however, is much more expensive on a per unit basis, with resellers getting almost $7,000 per unit. BitFury themselves do not publish the price of a single unit. Presumably their pricing varies based on the buyer’s requirements in terms of quantity.