Burgertime Aquarius

I've been looking for Burgertime for the Mattel Aquarius, but there seems to be no price guide. I know that it's a very rare cart to find but search I must. Here in the U.K. It sold at a private auction for 2600gbp yet I saw that someone in America sole one not realizing its value for 110 usd. Looking for any info on the boxed complete game.