Hi KOTM,
Welcome to the Mattress Forum! 
As jadespider mentioned (thanks jadespider!), Pure Talalay Bliss (if that is what you meant by “Talalay”) does have a dealer network that can be obtained by going to their website and using their Retailer locator on their top menu bar.
Saatva has been discussed quite a bit previously here on the forum, and you may perform a search on Saatva (just click on the link) to see posts mentioning them. They offer different models (innerspring, latex, memory foam), some of which are detailed in the Simplified Choice Thread here.
When assessing any mattress, the useful life mattress depends on knowing the specifics of its construction and the type and quality of the materials inside it regardless of the name of the manufacturer on the label or how a mattress feels in a showroom or when it is relatively new so I would always make sure that you find out the information listed here so you can compare the quality of the materials and components to the durability guidelines here to make sure there are no lower quality materials or weak links in a mattress that would be a cause for concern relative to the durability and useful life of a mattress before making any purchase. Id’ also suggest following the guidelines are outlined in the Mattress Shopping Tutorial here.
If you have any other more specific questions after reading through this, post them back here and I’ll do my best to answer them.
Phoenix