I have my M1A on the trade board,I've had several inquires to buy it? what would be a fare price for this rifle? You can get all info from the trade board with photo's

I don't need another M1A and I have purchased one within the last year nearly identical to yours but with more desirable USGI parts and NM features for less that what I'm about to quote you here but condsidering the cost/quality of a new one plus your USGI parts I would think a fare price would be around $1,300.00.
Personally I wouldn't entertain trading it for any kind of AR, even a Colt.... with all of the high quaility parts on the market now you could build yourself an AR that's as good as a Colt without that Pony price tag.