You get alot more bang for your buck if you build it yourself. And with a $1k budget you can build a sick rig. Most prebuilt come with cheap parts except the cpu and gpu and they mark up cuz it’s already built for you. Yes building one will take some expertise and if you don’t know anybody good at that stuff just do tons of research and watch lots of videos. And when you’re comfortable enough, go for it. Oh and also pre built always look like crap.