Not too long ago, I gave away a less-than-6-months-old piece of tech (purchased it at approx £950, for context) to a mate of mine as I no longer needed it. The reason I gave it to her (for free) was because I asked around, she said she could use it, and I thought, "why not" since it'd just be sitting on my shelf untouched otherwise.
Turns out, she has most likely sold it or well, "given it to a friend"!
I'm especially annoyed because if she hadn't said she was going to take it for personal use, I could've given it to someone else who actually needed it. AIBU in feeling like she had her mind set on making a quick buck off of me in the first place? And following that, AIBU to be mad at what she did? Or is this a case of "you gave it to her, she's free to do whatever she wants with it"?