Quite likely, going by what their past offerings are going for through Forgebear.
I'm trying to think if there's anything that would balloon the price beyond that, but all in all the Churchill isn't a complex or particularly large tank.
There's really only the barrel recoil and moving hull mg, but that shouldn't add much. The M2 Bradley they sell also have some unique quirks and features, and that's not overpriced compared to their MBT's.