Looking for an atx power supply for an atx mid tower case

[knux2.7.k]

Hi I wanted to know what atx power supply do I need for this case. I need enough power/cords the for the usual things but also enough if I ever wanted to upgrade my graphics card to one that needs to be powered by the power supply itself.
https://www.ebay.com/itm/Black-Technology-ATX-Mid-Tower-Computer-Gaming-PC-Case-W-3-pcs-aigo-Purple-Fans/352222093318?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D51979%26meid%3D03c45573c4b84dd9afc7c493f1929d9d%26pid%3D100033%26rk%3D1%26rkt%3D8%26sd%3D271454081237%26itm%3D352222093318&_trksid=p2045573.c100033.m2042

 

[superninja12]

I would get the corsair 460x or a nzxt s340 elite if thats too expensive.

poweruspply what about this one?PCPartPicker part list / Price breakdown by merchant

Power Supply: SeaSonic - FOCUS Gold 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($59.99 @ SuperBiiz)
Total: $59.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-05-12 16:15 EDT-0400