Package
The system was released in October 1992 for $299.99. Realizing that the price was too steep for many consumers (the system's price was driven up by the then-high costs involved in CD-ROM drive production), TTI included a lavish set of pack-ins to add value to the console, which they valued at the cost of the unit. The original pack-ins for the TurboDuo included the system, one control pad, an AC adapter, RCA cables, Ys Book I & II (a TurboGrafx-CD title), a SuperCD disc including Bonk's Adventure, Bonk's Revenge, Gate of Thunder and a secret version of Bomberman accessible via an easter egg, and a coupon book to save money on TurboDuo games and accessories. The system was also packaged with one TurboChip game which varied from system to system; Dungeon Explorer was the original TurboChip pack-in for TurboDuo, although many titles were eventually used, such as IREM's Ninja Spirit and NAMCO's Final Lap Twin and then, eventually, a random pick.
At the same time, the TurboGrafx-CD attachment for the TurboGrafx-16 was reduced in price to $150.00, and TTI offered the Super System Card (3.0 BIOS with 192k RAM, as found in the Duo) to allow TurboGrafx-CD owners to play the new SuperCD games. The Super System Card was sold for $65 as a standalone product, or $95 as a bundle including the previously-mentioned multi-case CD. It did not come with Ys Book I and II as the Duo did, nor did it come with a bonus TurboChip game.
Read more about this topic: Turbo Duo