Listen man, I'm not trying to make you feel bad. If the computer works that's great. You were just over charged. You got a AM4 Ryzen 5 3600. It's a almost 6 year old processor. Two DDR4 sticks of memory. AM4 board. Don't know the video card, there are a lot of 4gb video cards or power supply, SSD and case. He charged you 1000 bucks. With the parts I have I would have built you something pretty close for around 500 bucks. Now I'm talking used parts that I have which is not different then refurbished. Then 175 for labor. So around 675 total. So we are talking about me getting 675 bucks for my parts and some labor. Being used parts I would have gave you a 90 warranty. If it runs good and does what you want it too that's great, no problem. You just got over charged.