Hi wsviper,
This is a good quality material and the ILD’s of the layers are not a quality spec and not that important to know (your testing will tell you more about how good a match a mattress is in terms of PPP than the ILD of the layers).
These are also very good quality materials and there are no weak links in this mattress.
All you need to know is the type and blend of the latex which you already have. You can read more about the different types and blends of latex in post #6 here but this is certainly a good quality material.
No … just the type and blend of the latex.
No … ILD’s are a “comfort spec” and with a local purchase where you can test the mattress in person they aren’t important.
This part is up to you and would depend on whether you wanted to try other types of mattresses that you may like even more. I generally suggest going to at least two different stores or manufacturers so that you have some variety in what you tested and can make better comparisons between mattresses in terms of quality, value, and PPP.
There are some online retailers and manufacturers that ship to Canada (either from the US or Canada) in post #21 here but it can be very difficult to “match” one mattress to another unless you know every detail of the mattress you are trying to match and the online mattress you are considering has the same or very similar type of materials and components in the same layer thicknesses and firmness levels and a very similar cover (see post #9 here about trying to “match” one mattress to another). It can be difficult because even if you did know every detail of the mattress you are trying to match (and some specs are not always available because a manufacturer may want to keep some of the information about their mattresses that don’t reflect on quality proprietary so that others don’t “duplicate” their mattresses) … the online retailers or manufacturers may not have a similar design available.
If you do know the specifics of a local mattress you tested and is a good “match” for you then it’s certainly worth looking at the websites or talking to some of the online retailers or manufacturers to see if they make or sell something that is very similar and to check on their return or exchange policies so you have some recourse if they aren’t as good a match as you hoped.
Phoenix