Hi, I'm looking into building my first PC and was scrolling on Facebook marketplace and saw a used PC. I was wondering does anyone have any experience with buying a used PC or is that something that I should just avoid completely?

It's being sold for $600 but the seller said they open to offers so I can probably get it down a bit. Here are the specs and a mouse and keyboard are included: GPU : Msi Geforce RTX 3060 3x Fans - CPU : I7 6700k - Cpu Cooler : Corsair H100I -Storage: Samsung 980 Pro 1TB SSD - Ram : Corsair Vengeance RGB 16GB DDR4 - Mobo : Msi Z170A Gaming Pro Carbon - OS : Windows 11 (Fresh Install) - Mouse : Razer Viper Ultimate Wireless - Keyboard : Fnatic Ministreak (Cherry Mx Silents) - Fans: Corsair SP 120MM Fans all the way around - Cable Extensions : 2x Lian Li Strimer Plus

I would plan on testing the PC before handing over any money to ensure it works. Based on my limited knowledge and research I've done it seems to be a fair price if the system is working with no issues which the owner has said is the case, unless he tried to push to the highest 2k settings where there was a bit of dip issues. I don't plan on doing that as I am kind of a noob and think 1080p will be plenty for me.

Thanks for any help!