Price check on some Nightfall Items

I need a few price checks:

Shield Grip of Fortitude Health+25

Focus Core of Fortitude Health +25

Crippling Tribal Spear of Fortitude
Piercing Dmg 14-27 Req 10 spear
Lengthens Crippled Duration by 33% (stackable)
Health +29
Inscription: Don't Think Twice
Halves Casting Time of Spells

or would i be better off getting the health +29 addition and selling that?

thanks in advance to anyone that can help me