Based on the search results, the cheapest alternative to the MyGica ATV585 Android TV box would be the Amazon Fire TV Stick Lite at R899. As an Amazon device, it offers easy access to all your favourite streaming apps like Netflix, YouTube and Prime Video in full HD. Setup is straightforward by plugging it into your TV's HDMI port. It also comes with the Alexa voice remote so you can easily search and launch shows just by speaking. For a similar media streaming experience at an even lower price, the Fire TV Stick Lite would be an excellent cheaper option to consider.