nag babalak po kaming magtotropa bumili ng antminer s9 worthit po kaya yun kasi po nakakatakot din maglabas ng 100+k ehh ayun lang po thankyou in advance 
You can watch videos on youtube sa mga nag mine ng btc using antminer s9 so that you can assess if profitable sya and try to calculate kung kelan mag ROI (return of investment) nyo.
1 antminer lang bibilin nyo? san kayo bibili? kasi kung sa official site nila (https://shop.bitmain.com/) and s9 is worth $2725 wala pa shipping fee jan and as of now, sold out sya ang next batch na ng delivery is "Feb 21-28,2018"
You can also consider mining LITECOIN using Antminer L3+ (504MH/s) worth $1586, 1st batch shipping is on March 2018.