This may not help much but I bought a 1500 Howa Stainless 20" in 375 Ruger and it was well under $ 900 if I recall.
I originally had two new 375 Rugers an Alaskan and an African and after trying to work out some frustrating issues with both I sold them which left me with a whole bunch of brass and dies.
So when it was announced that Howa was chambering the 375 Ruger cartridge I did a bit of research and ordered a Howa from Prophet River.
Long story short, I couldn't be happier, but this all happened before there was any mention of Mossberg doing a rifle in that chambering or I might have gone that way instead.
I have no idea what price the Mossberg is selling for or who is selling them in Canada..