PC on two baseline perfect Flatbows (15^50 and 15 while in a stance)

Hi everyone, I'd like a PC on these 2 bows please:

1) Gold max Flatbow
Req. 8
Damage +15% while health is above 50%
Poisonous
Armor +5 always

2) Gold max Flatbow
Req. 8
Damage +15% while in a stance
Marksmanship +1 (chance: 15%)

Thanks a lot

BUMP. Anyone have an opinion on these please?

BUMP - ok guys, I have someone interested in the 15^50 so I could really use a price tag. I've been thinking 30k, would that be about right? And how much for the stance? TY