Looks like a few places list this: Lowes, Amazon and some other random sites. It says

Motion range up to 45ft with customizable ranges of 15ft, 30ft, and 45ft.

But I don't see that on their official specs anywhere. Seems like someone screwed up?

I'd agree, if you feel like you were ripped off, you should return it to Amazon. Maybe complain to Simplisafe and ask them to fix it.