Try e-gunparts.com
$10-$20
10-100 USD
$250
In 1983, the company was purchased by Iver Johnson Arms of Jacksonville, AR, but remained a separate division as Universal Firearms in Hialeah until closed and liquidated by Iver Johnson Arms in 1987.
10-1000 USD depending on specifics.
50-200 US Dollars
BLue book of gun values, standard catalog of firearms, check the online gun auction sites to see if any have sold lately.
10-80 USD or so
100-300 USD
50-80
Not in any reference I have. Probably a 22LR
$400 to $800 usd