Before the days of Sonic the Hedgehog, Sega had a different mascot on the Sega Master System known as Alex Kidd. If you are a fan of Alex Kidd and/or collect Sega Master System games you will be interested in this.
A eBay seller who goes by atari-rex has placed his prototype copy of Alex Kidd: The Lost Stars up for sale. Atari-Rex has been collecting video games for 36 years and has a feedback score of 120.
The current asking price is $250.