New miner

Hey guys, me and a friend are eyeing 6 x 3060ti LHR to start mine RVN with an expense for electricity of 0.11 usd per KW, does it make sense? Is there something we need to look out for?

We are going to pay 840 usd for each is it a fair price (where we are I couldn' t find any better)

Appreciate anyone that will take the time to answer me.