A system that gives you a reasonable shot at gaining new BitCoin is going to cost you.
-Shades
Bitcoin mining is SHA256/ASIC only. And the current 14.5TH ASIC miners are running $400-600US at Bitmain.com.
Now granted at the current difficulty/USD price they're only good enough for about $3 a day … But the intent was for the transaction payments to increase as the BTC production dropped off. However the transaction payments (e.g. cost...) part has turned into a rather total shit show that nobody is happy about.
Also, IIUC the BTC difficulty can be adjusted, if enough of the right people agree to it. BCH difficulty is dynamically adjustable based on hashing power available.