*The Spectrum 48K was released in the UK in 1982. The Amstrad CPC464 was released in the UK in 1984.
*Spectrum 48K sold for £99. The CPC464 with Green Screen monitor sold for £299 and with colour monitor for £399. One selling point was that the Amstrad needed only 1 plug, and that you didn't need to use the family television to use it. Also the Spectrum 48k wasn't supplied with any Monitor nor Mass Data Storage device.