All of Remington's Rifle MSRP's are generally the same or less than their CDN MSRP.
What are the odds the Remington ACR will hold true to that. ???
It should be Under $1800 CDN
Bushmaster lists the MSRP in the US at $2,685.00 for their basic model... the US dealer cost is well above the $1,800.00 figure you mention so I'm not sure how you figure that it will sell for "under $1800 CDN"?
The enhanced version (with folding/adjustable stock and rails) has an MSRP of over $3,000 USD.
The ACR being marketed under the Remington brand is the LE/Military product line... the commercial product is being sold under the Bushmaster brand name. I can't speak for their Canadian plans but that's the situation in the US right now.
Mark