A person buys a used desktop knowing exactly what they are getting. A Dell OptiPlex is a known quantity that lasts well beyond its planned obsolescence and this refurbished one came with a keyboard, mouse, and Windows 10 so pretty much a Windows license with a free PC.  The keyboard and mouse are generic USBs and get the job done. I installed an old PCIe video card and am running Bazzite on it for some light emulation gaming and so far it works like a champ. An OptiPlex as a sub $100 gaming PC is a healthy antidote to the $400+ gaming consoles in this economy.