how much is my 1978 Tunder bird worth in mint condition with 28,000 miles worth
It's true worth is what you are willing to pay for it. I'll get you an evaluation of market value shortly though.
Actual market value is between 4500 to 7600 depending on condition.
Check it out on KBB.com. Answer the questions and it will give you an approximate value.
Hagerty.com has a great valuation tool for classic cars. Heres the link to your vehicle... https://www.hagerty.com/valuationtools/HVT/VehicleSearch/Report? vbe=11080