Yes, the Duo was given the hail-mary price of only (only) $300 in the US, but in Japan, it was going to cost you basically twice that to play CD games through any means until the RX came out in mid-1994.
Ouch! I knew that the briefcase was an absurdly-expensive combo, but it hadn't hit me that the Duo and Duo-R still came with such a huge price tag in Japan, I'd always imagined them hitting the equivalent of that $300 US price.
That's more expensive than HuCard-only, yes, obviously ... but you're getting a
much better platform with the Super System Card built in ... and it's basically the same price that the PlayStation launched at.
Were the Duo and Duo-R sold in Japan at the equivalent of the $399 Sega Saturn launch price?
I don't think the transition to focusing on the CD platform happened because Hudson decided to slip the surly bonds of earth and fly to the stars. I think it's because their battleship was torpedoed by Nintendo, and their premium CD platform turned out to be a very good life-boat.
The PC Engine is/was a wonderful system, but technology was moving really fast back in those days, and the 3 years of difference in timing made it affordable for Nintendo to put a lot more graphical and sound goodies into the SNES.
Despite the things that Nintendo goofed on ... it's pretty hard to try to argue against the opinion that the SNES is a better cartridge-game system than the PCE.
As a bunch of tech-geeks, even Hudson's programmers wanted to develop for it.
But from 1987-1990, the PCE beat everything else on the market, including (IMHO) the MegaDrive.
But, as I've said before, the most-interesting thing about the PCE is the CD ... that changed the industry, and allowed for wonderful experiences like Ys (early on) and Xanadu (later on), and even Sapphire and the Arcade Card Neo Geo ports.
Is that really how it went, though? I'm not saying it's irrational at all, but has it been written anywhere that the SGX was in fact basically NEC's idea? I glanced through my late 1989 issues of Marukatsu PC Engine and couldn't find anything to that effect.
Hudson was a complex company, and they dreamed big. I wouldn't be surprised if the SGX came mostly from them.
It wouldn't surprise me if Hudson's tech-geeks had a big part in evangelizing to NEC about just why they should bring out the SuperGrafx to compete against the MegaDrive and whatever-Nintendo-were-cooking-up.
Remember Hudson were still developing for Nintendo and they may well have had early-access to SNES developer info (a 2-year lead isn't uncommon to get top developers on-board).
- The Power Console was a really big deal pre-launch. Seriously, the way it's introduced, it's practically the other half of the Supergrafx. It had a fully analog joystick, lever, and steering handle combo. It had its own CPU and 8k of RAM. It had a light-up LED panels that acted like gauges. It had the ability to store short strings of button presses. It had a built-in calculator. It had multiple ports to connect regular controllers. And the Supergrafx didn't connect to it via cable; you literally stuck the front of the Supergrafx into the back of the Power Console.
Also, it was going to cost 59800 yen.
Someone was definitely snorting too much Peruvian Marching Powder to ever think that was going to work out well!
In some ways, it
almost seems like they were trying to produce a cut-down version of the Sharp X68000 and its Cyber Stick.
The SuperGrafx's 128KB VRAM and 64-sprites-per-line comfortably beats both the SNES and the MegaDrive, and begins to approach the X68000.
Finally, many PCE owners wrote in angry that their system was about to become obsolete. It could be that this backlash is part of the reason why NEC/Hudson didn't do much to support the Supergrafx.
The backlash may well have surprised NEC who, I suspect, were more used to the regular backwards-compatible upgrade-cycle of computers ... where the SuperGrafx could basically be seen as just an upgraded high-end PCE.
The lack of developer interest (who thought that the PCE was "good-enough", and didn't want to develop for a split-market) was probably the bigger factor.