Of course it is costly. You will have to manage so many costly hardware to manage the whole system. Even it requires high power supply to run the machine properly. Additionally, the longevity of the machines are comparatively low.
I think Make sure that if the cost of electricity and rig is cheaper than other nearby countries then it is worth the shot and you may get back your capital / investment as soon as possible.
Obviously mining is expensive but worth a try, if you ever plan to mine bitcoin then better do the background check and feasibility study of the project you are proposing.
Mining is not for everyone but for those who want to do it then better start doing your own research now