I think that there is probably a bigger difference in sleep quality between a $300 mattress and a $500 mattress than between the $500 mattress and a $3000 mattress.
That seems awfully likely to me, too. I paid around $650 for a full-sized Sealy pillowtop something-or-other, apparently aimed at the hotel market, from an online mattress store some years ago, and it's been fine -- at least as comfortable as the ($800 in the early 1990s) Stearns & Foster it replaced. It's possible the Sealy won't last as long as the S&F did -- at least back then, the latter had a reputation for top-notch build quality -- but I have a lot of trouble envisioning any mattress in that size class being worth over $1000, let alone $3000.
That seems awfully likely to me, too. I paid around $650 for a full-sized Sealy pillowtop something-or-other, apparently aimed at the hotel market, from an online mattress store some years ago, and it's been fine -- at least as comfortable as the ($800 in the early 1990s) Stearns & Foster it replaced. It's possible the Sealy won't last as long as the S&F did -- at least back then, the latter had a reputation for top-notch build quality -- but I have a lot of trouble envisioning any mattress in that size class being worth over $1000, let alone $3000.