Find a retro game conference in your area, it almost always has refurbished and working hardware for sale. You're going to pay a premium for something that it w

Find a retro game conference in your area, it almost always has refurbished and working hardware for sale. You're going to pay a premium for something that it working and ready to go though so be ready for some sticker shock. CRT monitors in particular are climbing in value because the vast majority are getting old enough to require repairs like capacitor replacement. If you just want to use old hardware IMHO mess with MAME/MESS and emulation or the mister FPGA. Keeping old hardware running, particularly from that analog era, can be challenging and expensive.