I`m running Trainz22PE 123801 on a second-hand laptop, an old Dell with an AMD A6. I have no idea what the price was. The game runs fine, for the most part, but I run with most of the settings turned way down (many of them at absolute minimum), and the program is somewhat slowish, I think. I won`t be winning any FPS contests, anyway, that`s for sure, but I mostly script, so the FPS isn`t as big an issue for me as it would be for someone who wants to shoot a photorealistic movie.
Edit: Oops, I hadn`t read your question closely enough; you wanted recent model computers. Sorry, but perhaps this info might be interesting anyway: I probably don`t meet minimum specs and it still works, at least well enough for me.