Hi Karengriff.
Welcome to our Mattress Forum! 
I am glad you find our site helpful.
Just for clarity, I don’t make recommendations for stores unless they are a vetted member here of the site. We have decided to discontinue the provision of listings of potential retailers in various geographic regions (unless they are already approved site members), because of the difficulty in maintaining such lists in a retail landscape that is constantly changing, and most importantly the confusion it was creating with the consumer-members who incorrectly assumed that these businesses had indeed gone through the strict qualification process and were approved as members of The Mattress Underground.
Based on your criteria, here is a listing of Canadian and US manufacturers/retailers who are Trusted Members of our site that carry Latex or all Latex mattresses and ship across Canada that you may wish to consider. They are very seasoned in providing good guidance over the phone and fitting their customers with a suitable product in terms of comfort/support needs. Many of their latex mattress options would fit well within your budget range even at the current CE of .8
CBH Wood Furniture Canadian Manufacturer with a European tri slat system bed design with natural latex which is great for proper alignment
Memory Foam ComfortCanadian online retailer with a very good selection of latex mattresses and hybrids that would fit your budget range. They used to have their HC in Delta BC but I am not sure if this is still the case.
BedmastersUS based manufacturer (free shipping to Canada).
Arizona Premium MattressUS based manufacturer / ( extra shipping charges for Canada).
FloBeds Is a US-based manufacturer that ships worldwide with options that would fit your budget range
Luxi SleepUS based retailer with customer paid shipping to Canada
My Green MattressUS based manufacturer, ships to Canada.
Nest Bedding US-based manufacturer (free shipping to Canada).
Sleep EZUS based manufacturer, may charge extra for Canada shipping
I don’t keep a record of all retailers and manufacturers as this would be a bigger job than anyone could keep up with in a constantly changing market), but If you wish to find some showrooms that you can visit locally, you can always perform a forum search and you can type in the key term any city or area you would be closer to such as Vancouver, Canada (or other towns) or any other area and see what other businesses have been discussed in that region which may be helpful to you. I would make sure that any retailer or manufacturer that you wish to visit is completely transparent (see this article) and also confirm that any mattress that you are considering meets the quality/value guidelines here. If you have any questions about specifications or certain products, feel free to post back on the forum and I’ll do my best to provide answers.
I’m not sure what you’ve read since you found the site but just in case you haven’t read it yet … the first place to start your research is the mattress shopping tutorial here which includes all the basic information, steps, and guidelines that can help you make the best possible choice … and perhaps more importantly know how and why to avoid the worst ones.
Two of the most important links in the tutorial that I would especially make sure you’ve read are post #2 here which has more about the different ways to choose a suitable mattress (either locally or online) that is the best “match” for you in terms of “comfort”, firmness, and PPP (Posture and alignment, Pressure relief, and your own Personal preferences) that can help you assess and minimize the risks of making a choice that doesn’t turn out as well as you hoped for and post #13 here which has more about the most important parts of the “value” of a mattress purchase which can help you make more meaningful quality/value comparisons between mattresses in terms of suitability (how well you will sleep), durability (how long you will sleep well), and the overall value of a mattress compared to your other finalists based on all the parts of your personal value equation that are most important to you (including the price of course and the options you have available after a purchase if your choice doesn’t turn out as well as you hoped for).
Good luck! ….and once you’ve had the chance to narrow things down a little further, feel free to post back with any specific questions and I or any of our Expert Members we’ll be happy to assist you.
Phoenix