PC on Sundering Celestial Sword of Fortitude (15^50)

I am quite unfamiliar with the values and have been unable to find any recent info about similar items being sold. Could anyone offer me an idea of what it might be worth? Thanks.

Sundering Celestial Sword of Fortitude
Slashing Dmg : 15-22 (Req 10 Swordmanship)
Damage +15% (when health is over 50%)
Armor penetration +20%
Health +30

Only a few K to someone willing to buy it, the mods are probably worth more than the sword is..