PC On Bow Components

I need a price check on these bow parts:

Sundering Bowstring 20% penetration, 20% chance
Poisonous Bowstring 33% + poison duration
Bowgrip of Fortitude +24
Bowgrip of Fortitude +21

Thanks for your help.
P.S. I know the Sundering is worth like 10k atleast I think cause its max, but I got all these + an icy bowstring from a level 20 (apparently he was still a noob, or just very, very impatient) for the low price of: 242 gold! That's one hell of a deal.

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