Hi Brownie19,
Yes … that’s exactly what I’m saying 
You may look at a little more or less latex but in general you are looking at a good quality base foam with a few inches (or more) of latex over it.
I think that there should be other better value options available to you (I would be surprised if there wasn’t) but if there isn’t then it may also be worth considering an online purchase from one of the retailers or manufacturers in listed in post #21 here which ship across Canada. Of course this would depend on how you felt ordering online (with some of the exchange options available) vs ordering locally and whether the lower price was worth it for you.
For example … both Dreameasy and Dreamstar make latex mattresses of various types. Some of the other Toronto based manufacturers that are listed there also make latex mattresses and may have an outlet near you that carries them (they would look and tell you if you called them).
Phoenix