Currently im just mining ethereum with my 1060 3GB at about 19mh/s but I'm thinking about getting atleast two GPU's and putting them in my old computer and have them mining 24/7. Online I found a 1050ti, only used for 1 month, at about 140 USD. And also I found a miner selling used RX 560 4GB's of various models for 175 USD. Anyone think it would be worth? If I was thinking of getting a couple of 580 8GB in a month or two and later putting them in 6-card rig I'm also planning to purchase. Thoughts/tips?