Value of 1988 Schwinn KOM

I'm tempted to sell my 1988 Schwinn Project KOM, but don't know its value.
The rear brake caliper is mounted under the chain stays... unusual and for
that year only.
The frame size is 22 inch... the largest frame manufactured. I know it
retailed for $1000 when new.
In very good condition - hardly used. A few scratches, mostly from hanging
in the garage.
Any thoughts? Thanks.