As with all collector guns, there is no simple answer. The range is from the low hundreds to thousands of dollars. Who made the gun and the condition of the gun will make a huge difference in the price. To get a reasonable valuation on the gun you need to take it to someone who knows the current prices for these.
$300 see ebay
depending on maker and condition, $300-$800
10-1000 USD or more depending on specifics
Around $500, depending on condition.
Depending on condition, maker, and originality, these are selling for $700-$800.
$75 to $400 US depending on the condition.
Depends on condition and originality. Going rate for a good condition M1 Carbine is about $700-$800.
Depending on how old and the condition I'd say anywhere from 400-1000$
There were 247,100 M1 Carbines made by Standard Products. Depending on the condition of your carbine, if it has not been modified in any way, values are typically $800-$1000.15-1500 usd
Try oldguns.net
Name of who made it.
If it is a military issued carbine, and not a civilian copy, depending on maker, condition, model, etc, they are worth between $600-$1000 (for some or the rare makers)