Hi Nilu,
Just in case you haven’t read it yet … the first place I would start your research is the tutorial post here which has all the basic information, steps, and guidelines you will need to make the best possible choices … and avoid the worse ones.
I wouldn’t worry about any “sales” or have any sense of “urgency” because as Clawdia mentioned Plushbeds always has “sale prices” and there are also many other latex options available to you that have great value every day of the year. One of the links in the tutorial post includes a list of some of the members here that sell latex mattresses online that give you many different options that have great quality/value (they are listed in post #21 here). The “value” of a mattress purchase always depends on how it compares to other options you have available to you in terms of your personal value equation so I would never use a comparison with a so called “regular” price which is often fake or inflated (nobody ever buys the mattress at the “regular price”) to decide on whether the price is a “great deal”.
A forum search on Plushbeds (you can just click this) will bring up many more comments about them.
Phoenix