Hi jgmarans,
There is more about the most important parts of the “value” of a mattress purchase in post #13 here.
The Enchantment uses very high quality and durable materials in all the layers and there are no weak links in the mattress (see the guidelines here). In terms of durability it would be suitable for any weight range.
There is more about negotiating prices in post #6 here.
The Enchantment is very similar in design to the Brooklyn Bedding Alexis here which is also a great quality/value mattress and while I don’t know whether the Enchantment has exchangeable layers (which would add to the “value” of a mattress) or the options you would have after a purchase … this may be less important with a local purchase if you have done some careful testing (hopefully using the testing guidelines in the tutorial post) and confirmed that the Enchantment is a good “match” for you in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences).
I also don’t know the size of the mattress you are purchasing but you can use the Alexis as a “pricing reference” and if you are paying the same or less than the Alexis then I would consider the price to be very good “value” as well.
Phoenix