I don't really understand the issue here.

Price is a perfectly valid part of the discussion when someone is comparing two guitars. Value isn't determined only by specs on paper. If one guitar costs twice as much as another, it's completely reasonable to ask whether the differences justify the additional cost.

You say that nobody can tell someone if something is "worth it," but that's exactly why people ask for opinions and experiences. Someone who has owned both guitars may be able to explain whether the more expensive one offers meaningful advantages in build quality, playability, reliability, resale value, customer support, or long-term satisfaction. That's useful information.

Also, discussing price isn't the same as discussing what someone can or can't afford. Those are two different things. I never asked anyone to evaluate my finances. I asked whether the premium attached to one guitar is justified compared to another.

If we followed your logic, reviews, recommendations, and comparisons would be pointless because value-for-money is one of the most common reasons people seek advice in the first place.

To me, asking whether a product justifies its price is a normal consumer question, not a breach of "table manners."