Question Need Advice About this PC

[CharbelC]

so...hello i have been gaming(or struggling ) for few years on my intel i3 laptop with integrated graphics card and 4gb of ram and today i want to buy a gaming pc for something not higher then 700$ and i found this one but i dont have a lot of knowledge in computer parts due to the huge amount of parts that exist out there so i seek your advice here on Tom's Hardware...so those are the pc specs:
-Intel CoreTM i7-4770
-RAM 8Gb ( can change to 16gb if i add 45$)
-SSD 120GB
-HDD 500GB
DVDRW
VGA NVIDIA GTX 1050Ti 4GB DDR5
---this "bundle" comes with a free mouse, keyboard,headphone and a full hd 22" wide screen
all for 635$ refurbished (the shop is trusted)

all advice welcomed and appreciated xD
(first time posting here)

 

[Lutfij]

What is the make and model of your PSU for that build? For that amount of money, you can build your own entry level system.

 

[CharbelC]

What is the make and model of your PSU for that build? For that amount of money, you can build your own entry level system.

i haven't seen any PSU in this "build"

 

[Lutfij]

Got a link to this system that doesn't advertise a PSU in it?