We actually bought ours online through Amazon, we got a sleep innovations 10 inch mattress, right now a king is priced at $399, free shipping iirc. Now this is not temperpedic, and for us that’s a big plus, we do not like the latex mattresses like temperpedic, I feel like you sink too much and it’s difficult to move around in. I found that sleep innovations at the time made serta’s non latex mattresses, and was able to find one at HOM and we liked it, so we bought ours online and it came a couple days later, and we loved it right away, after a year, there are no real signs of wear, we are still as comfortable as ever and have adjusted to the differences, I wouldn’t go back to a regular mattress, all said and done we did it for about $800. Heat wise it don’t find it much hotter than our old mattress. Costco also sells some of sleep innovations mattresses, the 10 inch model we got it believe is in the firmer side of most foam mattresses, but we like not sinking all the way into the bed. 20 year warranty I was hesitant to go the route at first, but it’s been cheap and great for us. Funny the first couple weeks we would wake up a little sore, figured out it was because we were so comfortable we hardly moved all night and would end up laying on one side all night, we since adjusted and sleep great, honestly helped my back, and haven’t had a sore back from sleeping in this bed.