Fun fact there's still 45% of RX580/570s Mining(on hiveOS). My take is these will be shut-down in the coming months and profit will return. As of right now, @ 10c/kw There are
Overclocking the AMD RX 580 for Mining - The Geek Pub
ASUS Mining Radeon RX 580, MINING-RX580-4G-S, 4GB GDDR5, DVI (90YV0AQ7-M0NB00) | Price Comparison Skinflint UK