is it worth ALL of my allowance money?

After speech on Thursday, we stopped at "The Circle Store" (or Target).  I had a few things to get and SJ wanted to use some of his allowance money.  SJ never really wants anything.  I am not exaggerating.  When we see something we think he will like, we will ask him if he wants to get it.  He usually responds with "I don't know" or "Maybe next time".  He is so hard to buy for!  Recently, he has shown an interest in the K'NEX Mario track system.  He was looking at a set that was $24.99, but then Bob saw a bigger set that was $49.99.  It had two motorized carts (one for Mario and one for Luigi), lots of track and some obstacles.  Bob kept telling SJ that it was the "best value" (something my mom always is saying...she is a bargain shopper).  SJ kept looking at it, but was unsure if he wanted to use all of his money.  He walked away a few times, but he kept coming back to look at it.  After 20 minutes of this back and forth dance, he finally decided to get it.  As soon as we got home, the two of them started building it.  Within 30 minutes, I could hear the carts running.  I could also hear the sweet sound of my boys laughing and playing like brothers.  I would say it was definitely worth it!