Toothfairy creativity

On a hike this weekend the boys wanted to talk a lot about saving money and using a real bank for their own accounts.  I explained some things and made some deals with them to incentivize saving more money. Before bed, Alder needed to write something down. This turned out to be a note to the Toothfairy, put it under his pillow alongside $16 of his money. 

I am pretty sure the decimal is a typo. 

Would have been a sweet trade: $16 for $35. Worth a try right?