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My wife is suggesting that we buy a new mattress (and by 'suggesting' I mean, she has decided we are buying one).
The one we have now is Queen size, 10yo and cost about $2000. The ones she is looking at (online, as we are in Melbourne) are about the same price. Inner springs (preferably steel), with about 80-100mm of memory foam on top and all the usual stuff.
Here's the thing. Similar items are available online for under $400. The ones I have seen have quite good reviews (and I am wary of reviews, but they are mostly positive) and the pics look good, and they have a warranty.
Amazon has Prime Day next week so the deals might get even better on their units. I have looked at the brands Zinus and Giselle Bedding, and they both look OK.
While I am just as keen as she is to have a decent mattress for the next 10 years, I am also quite happy to have $1500 in my pocket for the next time we are allowed to get out of the state and go anywhere. That could be the difference between a vacation in Mildura or in Milan.
Has anyone got any experience with an Amazon mattress, or other online vendor?
No - but at $400 as opposed to $2000 you could replace your mattress every 2-3 years. Which is probably going to be more comfortable than an expensive mattress that you keep for 10 years that may sag or become uncomfortable. So I'd say trying the $400 can't hurt. (Amazon are also pretty good at refunds it is is awful)