My kid is like most kids his age. Either his eyes are way bigger than our wallet or he's begging to do something ridiculous with the stuff we've spent our money on.
But I've figured out how to gauge just how interested in something he really is. Rather than listen to him whine and beg and cajole and pout, I tell him to dance for it. "You'd better get to dancing," I say to him when I see that my "No" answer is about to garner a tantrum.
He will only go through so much humiliation for something he doesn't really want, but will dance until his lungs give out when he has his heart set on something. For instance, in this video, he danced his little butt off in exchange for having a "book sale" wherein he was going to give all his books to his little friend for his little friend to sell and give Javi a cut of the profit.
I made him dance and dance and dance (while I giggled uncontrollably and my sister sang to the music) and then I laughed as I told him his request was denied for being ridiculous. He was so worn out he didn't even argue with me. Instead, he and the friend went to the friend's house to locate something worth selling.
It may seem mean, but it's working for us. You have to let me know if you try it.
This post is part of Works for Me Wednesday and Wordful Wednesday.