To be honest, I went on cex, and that site is confusing.

I used their calculator and based on what it said and the prices being offered, I would pay the current BTC rate of roughly $900+, and after 12 months would only have earned about $250. That hardly seems like a good deal. In fact, it sounds like a complete waste of your money.

Someone said I could resell after using it, but that will not make up for my loss nor would a tiny amount of hashing power sell for much.

Just confused about it.