How is mining profitable if a $10.000 ASIC will generate like $63.23 per month? This $10k ASIC miner has 1TH/s and by this hashing calculator (I know they're not THAT precise but...) it'll generate like $63.23 per month? Why would anyone invest in this?
That particular miner is way overpriced.  Nobody should buy it at that price.  The seller either listed an incorrect price, or is very confused about the current market for mining hardware, or is hoping to find a customer who is a sucker.

For comparison, the Antminer S5+ has a (claimed) hash rate about 7x higher and costs about 1/4 as much, making it about 28 times more economical.