With UK energy prices on the rise up to the equivalent of $0.28 kW/h and more, the most “affordable” of miners which for me is around $8000 or £6k simply aren’t efficient enough.
I have looked at GPU miners and ROI is well over a year for decent returns.
ASIC miners value of $24000 cost are the only ones that offer profitable returns but too pricey for me right now.
I’ve looked at Jasminer but concerned about ethereum POS even though it can mine other coins but then ROI massively increases and given 5G memory probably not viable.
Purchase a miner and have it installed at a colocation where you would be paying much less for electricity. This would be much more profitable for you.
I’m in the UK and have been mining for the last year or so with a 1080Ti GPU rig and a 3080 GPU Rig as well as 4 Antminer L3+s. I was paying £0.15 kW/h but my energy supplier went bust, and now paying £0.24 kW/h, with more price hikes looming so i’ve stopped mining with the GPUs and am looking for alternative hosting for the L3+s. Its just not worth mining on UK residential power rates nowadays.