I think it comes down more to character tastes than affordability. If you can afford to own a stable of starships and capital ships with thousands of crew, I'm sure you could have gold-plated toilets if one desired it so
So the ostentatious capsuleers are ostentatious, and the more humble ones don't live rediculously.
You underestimate the comfort provided by solid 24 carat...
In any case if we're talking about food, beat in mind that this is the FYOOOOCHAAAAA! and most of what you eat is almost definitely made from Genetically Modified crops or animals.
In other cases it may just be straight out sci-fi bio-goop as the principle ingredient. But thats me being all sci fi
The only noteable exeption to this that I can recall is that of Amarrian wheat, which is 100% organic with no genetic tampering. For some reason.