Hi Danny,
If you are considering one of the PLB mattresses then post #32 here includes some of the retailers that sell them and ship them across the country that can give you some good “value comparisons” for the same mattress.
There is also more about “matching” one mattress to another in post #9 here but outside of comparing two mattresses that are close to identical in their specific design and materials … your own personal testing or experience is the only way to know whether another mattress with differences in the design feels similar to you. The tutorial post includes a link to a list of some of the members of this site that sell online and many of them carry latex mattresses with a wide range of options, features, and price ranges that may be well worth talking to about which of the options they have available may be closest to the PLB that you liked. The specs for the PLB mattresses to the best of my knowledge are in post #2 here. There is also a link there to some of the better online memory foam providers I’m aware of (some of which are also members of this site) and many of them also make mattresses that use the Tempurpedic mattresses (including the Cloud Luxe) as a reference point.
Post #3 here and the adjustable bed thread it links to should be helpful 
Phoenix