Well the evga super nova is in usa amazon maybe the op can not buy from the usa amazon

 https://www.amazon.com/EVGA-Supernova-Modular-Warranty-220-G5-1000-X1/dp/B07WMTD41Z/ref=sr_1_1?

the pcie cables are 8pin and 6p which needs an adapter to work for 3070

---

the seasonic 1000watt is 259

https://www.amazon.com/Seasonic-GX-1000-Full-Modular-Application-SSR-1000FX/dp/B07WVWJW8N/ref=sr_1_1?

the seasonic 850 watt is 129

https://www.amazon.com/Seasonic-Semi-Modular-Systems-Warranty-Application/dp/B084TSBB2R/ref=sr_1_1?

semi-moduler

2x the price for 150 watts is a rip off.

---

I do think you found him a 1200 watt they is good if he can buy it.

https://www.amazon.com/Thermaltake-Toughpower-Modular-Warranty-PS-TPD-1200MPCGUS-1/dp/B00LZVOK18/ref=sr_1_3?