The Nite Finder costs $9.99 in Canada in most stores, and if you are lucky you can find a double pack for $19.99 to $24.99.
I have the Nerf magstrike and it cost me $30
the nerf vulcan costs about 49.99
about $40
19.99
$31.54
20-50$$$$$$$$$
29.99
around$10.
around $40 U.S.
The Barricade RV-10 costs $16.99 according to the Nerf website home page.
$40-$45 depending on where you get it