Would be interesting to know about PCE sales figures game by game. But as I understood that data is not really available. I bet the later Hucard games sold in relative low numbers. From my very limited research I also got an impression that 100k - especially for later Hucards - was a smash hit.
I remember hearing that Magical Chase was the best selling Hucard at some point, probably in one specific month. Still strange that the Japanese version is so expensive, I get that the US release saw an extremely limited print run and the demand for the Japanese version comes from there. But there are so many Japan only games without any US release, many of which are likely more scarce than the Magical Chase.
Blazing Lazers is definitely more common than Gunhead, in Europe there were still new old stock few years ago. And also at this point its a fair assumption that the demand for PCE games in general is greater than for Turbo games. For Turbo the market is pretty much North America, for PCE its the whole world, including North America.