I think the "Related Question" below addresses what you're looking for - cost of the core, and some information about labor pricing.
Approx $70.00
The cost of a heat exchanger for a furnace can vary depending on the size and type of furnace, but typically ranges from 300 to 1500.
The cost to replace a furnace heat exchanger typically ranges from 500 to 2,000, depending on the type of furnace and the complexity of the installation.
The typical cost of replacing a furnace heat exchanger can range from 500 to 2,000, depending on the type of furnace and the complexity of the installation.
The estimated cost to replace a heat exchanger in a heating system can range from 500 to 2,000, depending on the size and complexity of the system.
The average cost of furnace heat exchanger replacement is typically between 500 to 2,000, depending on the type of furnace and the complexity of the job.
The typical cost of a heat exchanger for industrial applications can range from a few hundred dollars to several thousand dollars, depending on the size, material, and complexity of the unit.
The average cost of a heat exchanger furnace typically ranges from 2,000 to 5,000, depending on the size, brand, and efficiency of the unit. Additional installation costs may apply.
The cost of a heat exchanger can vary depending on factors such as size, material, and complexity. Generally, smaller and simpler heat exchangers are less expensive, while larger and more complex ones can be more costly. Other factors that can affect the cost include the brand, quality, and specific requirements of the heat exchanger.
about $700 for parts from junk yard. DIY : your time Mechanic : approx $800
They didn't have Taurus in 1933.
A Teflon coating in a heat exchanger can reduce the cost of operation in two ways: 1) the coating can protect it from corrosion and deposits thus reducing the cost of upkeep 2) to a lesser extent, a Teflon coating may reduce some drag on fluid flowing through the exchanger and consequently reduce the energy costs for pumping fluids through it.