This gets into the economics of whether it's more worthwhile to sell to a large, casual audience for say $10 or a small enthusiast audience at $30-40. At the enthusiast price I expect a polished game at launch and loads of reasonably priced expansions in the not too distant future.
https://store.steampowered.com/app/1124180/Rail_Route/ is pretty niche (and is in my library) ... and its $25, which is a fair bit less than the $40 price point planned for Steam. https://store.steampowered.com/app/1134710/NIMBY_Rails/ NIMBY Rails is at $19 (also in my library).
It could very well be a great game... though that price is one that's setting the expectations for it high.