To get any toy to do with halo you should try some game shops and eBay and other places that sell things halo styled.
halo3 toys for under 3 dollars
at target
There are many places online that one can go to purchase Halo 3 toys. Online at Toys on Fire they have a large selection, as does the Big Bad Toy Store, and Spawn.
google it man they are everywhere especially on amazon
only sometimes
They are already out on some websites.
Toys-r-us they might not show it on their website.
Ebay, game station, game
Please visit the Gamespot game guide for Halo 3. There you will find all the locations of the Halo 3 skulls.
Sorry there arn't any, The only skulls are in "Halo 3" Which are used in "Halo 3 O.D.S.T."
they already have
find out for your self