The GP said that he has severe emotional problems, related to childhood trauma around spending money and also broke down when buying the bed.

Why are you criticizing his choice of bed? You are showing a lack of empathy to the poster's actual point, which isn't "Help me find a cheap bed". It feels like you're just looking for an opportunity to brag about how good at buying beds you are. Even if you're not, your response doesn't say anything about the article or add to the wider discussion in any way.

I can relate to both mindsets. I stay more frugal despite not needing to, so $700 is a lot to me. But the vitriol of saying "thou shall" is what I dislike. The psychological trauma of fearing the spending of any money is real ... but I'd rather have a dose of it rather than none at all.

Make friends with a hotel manager and have them order you a set of the tempur sealy or Simmons foundation (box spring) and mattress specific for hotels. It’s only $500 total (~$250 each), and come with a 10 year warranty (for the hotel). Don’t even need to flip or rotate them.

That’s your takeaway from the story (s)he shared?