Hi droidx.
The price point would be another part of your personal value equation. While durability may be for a shorter time, you’ll still want to make sure that whatever you choose has good quality and durable materials that offers the comfort/sport you need for the useful life of the mattress. There is no magic “formula” that can determine “value” down to the last detail or replace “your best judgment” because there will always be some unknowns in any mattress purchase that can only be answered by your own long-term personal experience.
The 4[sup]th[/sup] of July holiday is probably your next opportunity for a new big mattress sales event.
Phoenix