Interesting story about pricing of mattress and what Sleep Train actually pays for their mattress.  

I shopped at a local Sleep Train in the San Jose area.  The list price on the Sealy Reserve Plush models (Sleep Train called Glen Marie) is shown to be $1449.  Keep in mind, Sleeptrain normally includes mattress, boxsprings, and frames in their pricing. 

I managed to negotiate the prices down to about $800 before taxes.  Then I sat there, and watched the guy go to work.  At some point, they made a mistake, and managed to put in $732 on the computer, since the guy thought the manager said $800 out the door. Then the person asked a question to the manager, as I happen to glance over. 

The computer had displayed the following message, "Priced at below 45% margin.  Proceed (Y/N)?"

That background kind of gave a reference on what Sleep Train and their pals at Mattress Discounters were paying for their mattresses, margins are typically calculated this way:

Margin is calculated as: (price – cost) /price = margin.

My price was $732, if I assume to margin is 45%, the computer said less, but let’s make the 45% assumption.   You can come up with a cost of $402 for the mattress, at least that’s what Sleep Train and Mattress Discounters has paid for it.

So, their list price of $1440 is about 3.5 times what Sleep Train actually pays for the beds.

For everyone who shops there, remember, the cost to Sleep Train and Mattress Discounters  for a Sealy Posteurpedic Reserve Plush model beds (Glen Marie for Sleep Train) is around: $400 for mattress, box, and frame (plus delivery)

I ultimately decided not to buy the bed, but hope this information is helpful to other people out there.  At least those in the SF Bay area.