Hi DHC,
When you are comparing mattresses I would make mattress only to mattress only comparisons so that any difference in the price of the foundation doesn’t affect your comparisons because you can use any suitable foundation under a mattress.
The Classic 200o is also an all latex mattress and uses more costly materials than a latex/polyfoam hybrid that only uses latex in the comfort layers (latex is much more costly than polyfoam). It also uses certified organic latex which is also more costly than many other types and blends of latex. There is more about latex/polyfoam hybrid mattresses vs all latex mattresses in post #2 here and there is more about the different types and blends of latex in post #6 here.
The first “rule” of mattress shopping is to always remember that you are the only one that can feel what you feel on a mattress and there are too many unknowns, variables, and personal preferences involved that are unique to each person to use a formula or for anyone to be able to predict or make a specific suggestion or recommendation about which mattress or combination of materials and components or which type of mattress would be the best “match” for you in terms of “comfort” or PPP (Posture and alignment, Pressure relief, and Personal preferences) or how a mattress will “feel” to you or compare to another mattress based on specs (either yours or a mattress) or “theory at a distance” that can possibly be more accurate than your own careful testing (hopefully using the testing guidelines in step 4 of the tutorial) or if you can’t test a mattress in person then your own personal sleeping experience (see mattress firmness/comfort levels in post #2 here).
Phoenix