> Buy for $x, have and not sell for $x, same mathematically. But oh boy will people get instantly riled up emotionally :).
Price and value are not the same. The logic of your friend was basically putting a price on how "special" (or not) he saw your relationship versus some rando-buyer online.
That is why people (close to you) get riled up emotionally: they're being treated in a way no different than a complete stranger.
If you ask your friend for $100 for no particular reason, just because you want $100, that's an annoying request and "no" is a reasonable response. It's not putting a price on your relationship. It's technically the same answer they'd give a stranger, but that doesn't mean you're being treated like a stranger.
(I do think a slight discount often makes sense just because a friend is probably quicker and easier to deal with. But anything more substantial turns into asking for free stuff, and yes and no are both perfectly fine answers to that.)
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