I wanted around 20 TH/s at home under 400W, and it took me two weeks of spreadsheets to even try to decide where to buy. The listed price was never what I'd actually pay: VAT differs by country, some shops show prices with VAT and some without, and new devices kept appearing so I kept starting over.
So I made minerdeals.eu. It compares 7 EU shops, home and industrial miners, applies your country's VAT, and sorts by cost per TH and efficiency.
The weak spots, honestly: shipping estimates are rough because shop shipping rules are messy, there are only 7 shops so far, and nothing is verified against real buyer receipts yet.
I didn't build it to make a living. I built it because I couldn't decide where to buy, and if nobody else uses it, it already did its job for me. A couple of shops gave me affiliate links that I use, and they don't affect the ranking. At most it might pay for hosting.
