Hi latex mattress hunt,
There are many businesses in the industry that are honest and reliable and sell their mattresses for fair prices but when you are looking at unreaslitically low prices then it’s much more likely that you will be exposed to retailers/manufacturers that may not be the most ethical or reliable and $1200 is unreaslitically low for what you are looking for. Having said that … you may be able to find something that meets your criteria for less than the $3500-4000 you were mentioning as well.
I’ve already linked the better online suppliers I’m aware of that ship across Canada but it may also be worth looking at some of the local companies that are available to you and the better options and possibilities I’m aware of in the Winnipeg area (subject to the guidelines here) are listed in post #2 here.
Phoenix