what is a fair price for a 5 ft. woods back blade , guy got it with the deal when he got a new tractor , it was not ever used , 3 years old but its like new , Thanks for any infor .Frank
It would depend on what model it is.
To give you a bit of insight, two years ago a guy paid just shy of $1000 for a Landpride 3572 (heavy duty 6' blade). He said he used it twice and then sold it to me about two months ago for $695 and the paint wasn't even worn off the lower inch of the cutting edge. New now one of them is about $1300-$1400.
Taking a guess the Woods you are asking about is a light duty 5' blade, probably 1/2 the price of the Landpride 3572 three years ago.