Hi pbambei,
Sean at SleepNation is very knowledgeable, transparent, and helpful and carries some very good quality mattresses. They are certainly one of the better options in the Denver area and are on the Denver list here.
The Wazee St has 11" of 100% natural Talalay which is a high quality material and there are no weak links in the mattress. If your testing indicates that it’s a good match for you in terms of PPP it would certainly make a better quality/value choice than most of the mainstream mattresses most people end up buying in this price range and I would certainly consider it as one of your “finalists”.
Once you have eliminated the worst options and are down to final choices, then the value of a mattress purchase is relative to what else is available to you in the area (or online if you are comfortable with an online purchase), the mattresses you are comparing it to, and on the parts of your personal value equation that are most important to you. The listed price for the Wazee St King is $3499 so it would be somewhat outside your budget if you are looking more in the $2000 range but it’s not that likely that you would find a similar mattress with 12" of 100% natural Dunlop latex in the $2000 price range.
Phoenix