your question is not specific enough, .30 cal carbine can be anything, as for 1944 can also mean a very wide range of firearms.
for the two I know of:
M1 Carbine, .30 carbine caliber, semiautomatic carbine
Inland - around $800
Mosin Nagant M44 carbine, manuf 1944 in very good condition (like if you bought "new" from a store)
around $90.
there are hundreds of ".30 cal carbine" that are also manufactured in "1944".
No.
what is a m1 carbine worth
International Business and Machine Corporation made this certain carbine in Late April or May 1944. It sounds like a great original Carbine.
July 1944
About Jan 1944.
September 1942 to February 1944.
Between December 1943 and May 1944.
It depends on who made it and what condition it is in. If it's a Hi-Point carbine, they are on the lower-end for value and price even though they are known to be reliable. It might be worth $200 U.S. Dollars. But a Beretta or Ruger .40 caliber carbine might be worth $500 or so.
Between February and November 1944.
between November 1944 and January 1945.
Between May 1943 and February 1944.
Between September 1943 and January 1944.