40000$? lol joke man
better rent on miningrigrentals

U should start love math.
U will pay ~50000$ to rent 30000H for zcash just for one year.
How that is better than 40000$ to have own rigs?
high risk, better rent rigs only 1 days
like nicehash or miningrigrentals sir

This post is for those who prefer buying.
U can rent.