PC on Poisonous Celestial Longbow of Fortitude

Poisonous Celestial Longbow of Fortitude
Req. 9 Marksmanship
15^50
Lengthens poison duration on foes 33%
Health +30


I have a couple questions. First of all, I know this bow has potential to sell for a pretty penny. Sold as is, what's a good price to accept for it? Also, being so close to ideal as it is, should I put the 20/20 AP mod on it and sell it that way? How much would that raise its value and interest in it?

Thanks!

check sticky