OK, this is not guitar, so if that's too OT, feel free to skip.
All my young'uns do a decent turn on Piano. We (The Ex Mrs Smith) and I, made sure they could all (a) read music, (b) sight read an instrument; 2/3 chose piano - son #2 did it another way, in his own awesome way.
So one day, back when my daughter (#1 childer) and I had a functional relationship, we popped into a posh piano shop in Norwich. She proceeded to unleash a film tune on a demo piano - I think it was a fairly dramatic piece from one of the Lord of Rings movie soundtracks. Anyway - a few moments passed, and I noted that the instrument she was employing cost several 10s of £1000s and that, y'know... perhaps we should have asked first.
We left without buying anything, thank god!