My god it's expensive!
I have seen it aplenty at one shop for $30 or $40. I think you would buy the helmet and all the optional stuff for $60 to $80.
However, I do have a 2 year old too large helmet (elastic band isn't elastic anymore) that is good for cold winter days -- with balaclava inside -- and a newer Giro helmet which is tight enough for Summer, but expandable to use a headband under, so it suits me 325 days/year. So I didn't try the new Bell Metro.