If the rust wasn't there, maybe slightly closer to 20.

In 2 - 4 years time (at the most),
that will be a $22 - 24,000 gun,
especially if someone put the correct case
with it and a few nice shiny accessories.

I think BPE DR's of good make, good condition are
increasing in value at 10 - 25% a year at the moment
- and have been for some time.