Getting a custom built PC is always better than buying a pre-built from Argos or Currys, it's cheaper and has a better spec. Do not be mislead by a lot "high-end" gaming PC's, if you enter the make of their processors and graphics cards on www.pcgamebenchmark.com you will see they do not have the required spec to run AAA games such as Microsoft Flight Simulator 2020, Assasins Creed: Valhalla and COD: Warzone, which are graphically demanding games.
I have been building computers since 2007 and I will not over complicate and over spec a machine for profit, games like Fortnite and GTA V do not not require "high-end" PC's and can run comfortably on low spec PC's at much cheaper costs.

Please message me if your looking for a good reliable PC, tell me your budget and you can get something like the computers in my pictures. Those are real photos of real computers built for other people, and not stolen.
I can offer you the choice of buying your own parts for me to build for you, and I'd be happy to assist you doing this, I would only charge a £50 labour fee. Or I can build you a quality gaming PC to suit the type of game you or your child would like, using new components or a combination of new and used to build you the cheapest possible gaming PC that you require. No hidden costs, I will invoice you the exact amount for everything.
My son wanted a gaming PC for Christmas so he could play Microsoft Flight Simulator 2020, I knew it was graphically demanding game so I knew it needed to have some decent spec. I managed to build it for £380, that runs comfortably on medium - high settings, which isn't bad as other sellers are quoting close to £600 for a PC to run that game.
Light up keyboard, mouse & speakers can be supplied at small extra cost.

Please allow a few days for build due to arrival of parts.

Can deliver for free if local.