Question of value?

I was wondering if you could help me.
I have a copy of Edgar Allan Poe's, The complete works. Pub:Adam and
Black. Edinburgh, Ingram 1st ed. 4 volumes. Perfect Shape...I mean
perfect.
Would you know of the value/ I've been looking for days and haven't
found this set. I'd be interesting in selling. All I'm asking for is a
ballpark figure if I am approached. Also, a value for a quick sale, if
so willing.
Thanking you in advance,
Mark