Are you referring to the M1 Garand, or the M1 carbine? A Garand can go anywhere from $500 to over $1000, all things dependent. An M1 carbine, generally, you'd be looking in the $400 - $700 range.
$200 - $600, give or take.
$100, I would say.
you stole them........ value depends of make & condition. $400-$650
$75 to $400 US depending on the condition.
$400-$900 depending on condition and originality.
It should if it fits on other kinds of M1 Carbines.
Plainfield carbines were a civilian version of the miltary carbine. Value is low, about $200.
$300 - $800