Some hotels do something similar -- chains sell the mattresses that they use in their hotels to consumers.[1]

[1] http://www.whotelsthestore.com/item.asp?curr_item_id=5

Westin makes a lot of fuss about how great their beds are and how you can buy the whole kit for your home.

http://www.westin-hotelsathome.com/bed.aspx

I was a little disappointed when I stayed in a Westin a few years ago, the bed was nice, but didn't live up to the high expectations.

Westin and 'W' hotels are the #2 and #1 "tier" hotels in the same company, Starwood. And it seems that the 'W' bed costs about $500 more than the "Westin" version. Fitting.

Le Meridien and St. Regis are both higher-end than W hotels, and are also part of SPG.

St. Regis and Luxury Collection (some of which are branded as Sheratons, strangely...) are the highest, but there isn't a strict ordering of W, Westin, Le Meridien. I'd probably say it goes W, Le Meridien, Westin, but individual properties have a lot of variation. then Sheraton, then Element and Aloft, then Four Points. There are individual Sheratons which are worse than Four Points though.

I prefer the Westin bed to the W bed; I've probably spent >100 nights in each.

I think you mean mattress.ly