Xi'an Saige computer city assembly computer following configuration at least how much money?

3000 or so more than 3500 don't want to not worth that price, more than 3000 count a little expensive, assembly computer general price in 2000 - 3000 this price! A computer is good and bad, mainly to see: CPU, memory, monitor, motherboard, graphics card, power supply, generally these things worth money!