I thought the signs were multiplying, not disappearing

This is funny: Griswold and Smith's signs are being stolen and used to line pools. From what I heard, its a big no no to take signs that are put up. I wonder what will happen to the developer.

I didn't realize that those signs were so dang expensive! $50 bucks a piece according to Griswold. So, if he has only spent $17,000 to date, does that mean he has 340 signs up? It sure fees like a lot more than that!