How much would you pay for a 98 Ford F250 4 Door, Deisel Truck in Good condition?

Question

The truck is a black 4 door

F250 with runnin boards and a toolbox

Its very clean on the inside

Answer 1

Try out Driverside. It's still in beta but for each model it has cost of ownership, quality ratings, lists of similar cars, technical specs and links to other sites that will help you out with more data.  Also the pricing data by mileage will help you see how good the deal is.  From what you say - I am not sure of the trim level.

http://www.driverside.com/car/ford-f_250...

Answer 2

Is it a long bed, short bed, what kind of engine, when was the last tune up, are the tires good, what is the mileage, was it used to tow heavy things alot, what was the normal payload?

Too many unanswered questions to give you an idea of how much it is worth.

Check out Kelly blue book if you are selling the truck yourself, or NADA.com if you are trading it in.