It's impossible to know for sure without a ton* more information, but you can get an idea for the possible price range at a site like Statricks. For example, at show a price for "cast iron radiator" of $127, with a fairly wide price range of $97 to $156.
* Or, for example, go to the small link saying "Full Blue Book Analysis" ( statricks.com/blue-book/rough/cast-iron-radiator ) after searching for it and you scroll down and go to the "Historical Listings" tab and use the Checks and X's to refine the price according to your item. My guess is that the original range and price is probably pretty spot on, though, already.
How much is a royal ranger stove worth
1.9 billion
a wincroft cast iron stove
$850.00
125.00
how much are old iron wheels worth
If the condition is decent and it is extra deep and long over $3,500
iron is approximately worth $1.50 per pound
value of 35 gal black cast iron kettle
iron is approximately worth $1.50 per pound
$300
Although iron is worth much less per pound than some other metals such as copper, aluminum, silver, chromium, etc., iron is worth money.