Your going to need a 20k bitcoin in order to get $2 dollars per gpu per day and I would consider this fair work for fair pay from a small line of work business accounting perspective.
In order to get party time $5 dollars a day per gpu like the good ole days you will need a 60k-100k+ btc price. So don't expect party time anytime this year. Give it 2-3 years.
Currently the 1080ti gets $1.3 USD per day with ~$0.5 power cost, used card in warranty costs $500~600 on ebay. Not that bad if you still plays some games.