I was just looking to buy Obelisk SC1 at https://www.digitalcryto.com/ and noticed that the Obelisk SC1 is very profitable and actually reasonably priced on eBay.

What is the deal with the SC1? With the price of cryptocurrency being relatively flat/low recently, mining has barely been profitable, so what is the deal with the SC1? Is it expected that as more products are introduced to the market, the profitability will drop quickly? Can anyone give information about 12 card mining rig too?