Epic rant was epic. Good for you and I wish all the best and a happy Christmas.
FWIW, I’m not sure now old she is, but I would ask your daughter what she thinks you should do. You could show her the toy, then explain how much money you paid for it and how much someone else might now pay to buy it from you. It’d be a value-of-money + maths (I’m a Brit, so it’s it’s ‘maths’ for me 😉) + philosophy + decision-making lesson all rolled into one, with either a cool toy or a pile of money for more cool toys at the end of it. 🙂