Unfortunately, the damage mod is the most important on one of these, it's a REAL shame it's a percent off. it doesn't "kill" it, but it DOES drop the value some.
I'd expect you could get in the 80k range. The rough part is that if it was 1% higher, you could double that figure.
I'm kinda new at pricing the high-figure stuff though, so don't just take my word for it.