Luca

Stunning Steel Slowtouch   Tidus
Rulebreaker Poisontouch   Wakka
Thunder Spear Piercing, Lightningstrike   Kimahri
Magic Ring MP +5%   Yuna
Magic Bangle MP +5%   Lulu
Red Armlet Fire Ward   Kimahri
Potion
Phoenix Down
Antidote
Eye Drops
Echo Screen
     

 

Mushroom Rock Road

Ice Brand Icestrike   Tidus
Metal Shield HP +5%, Defence +3%   Tidus
Rod of Wisdom Magic +3%, Sensor   Yuna
Magic Ring HP +3%, MP +5%   Yuna
Nullfrost Armguard HP +5%, SOS Nulfrost   Wakka
Magic Bangle HP +5%, MP +5%   Lulu
Light Bracer Slow Ward   Auron
Potion
Phoenix Down
Antidote
Eye Drops
Echo Screen
     
 

Mushroom Rock Road - Ridge

Avenger Counter-Attack   Tidus
T.K.O Stonetouch   Wakka
Sentry Piercing + Initiative   Auron
Pearl Ring Magic Defence +3%   Yuna
White Armlet Ice Ward   Kimahri
Alert Armlet Sleep Ward   Kimahri
Blue Bangle Magic Defence +3%, Water Ward   Lulu
Red Ring Fire Ward, SOS NulTide   Yuna
Lucid Armguard Magic Defence +3%, Confuse Ward   Wakka
Potion
Phoenix Down
Antidote
Eye Drops
Echo Screen
Soft
     
(After operation Mi'ihen, O'aka will only sell items)

Moonflow - South Wharf

Double-Edge Firestrike, Icestrike   Tidus
Switch Hitter Strength +5%, Strength +3%   Wakka
Snakehead Magic +5%, Poisontouch   Kimahri
Mythril Ring Magic Defence +5%, Defence +5%   Yuna
Emerald Bangle Magic Defence +5%, Defence +3%   Lulu
Serum Bracer Poison Ward, SOS NulShock   Auron
Potion
Phoenix Down
Antidote
Eye Drops
Echo Screen
Soft
     
(He'll be on the North Wharf as well once you've crossed, but only sell items)

Guadosalam

Double-Edge Waterstrike, Lightningstrike   Tidus
Beladonna Wand Magic +5%, Poisontouch   Yuna
Blind Pass Darktouch 1 slot Wakka
Fatal Cait Sith Magic +5%, Deathtouch   Lulu
Shimmering Blade Piercing, Strength +5% 1 slot Auron
Devastator Strength +5% 1 slot Rikku
Yellow Shield Lightning Ward 1 slot Tidus
Yellow Ring Lightning Ward 1 slot Yuna
Yellow Armguard Lightning Ward 1 slot Wakka
Yellow Bangle Lightning Ward 1 slot Lulu
Yellow Armlet Lightning Ward 1 slot Kimahri
Yellow Bracer Lightning Ward 1 slot Auron
Yellow Targe Lightning Ward 1 slot Rikku
Potion
Phoenix Down
Antidote
Eye Drops
Echo Screen
Soft
     
 

Bevelle - Highbridge

Potion
Phoenix Down
Antidote
Eye Drops
Echo Screen
Soft
Power Distiller
Mana Distiller
Speed Distiller
Ability Distiller
     
 

Macalania Woods

Sonic Steel First Strike   Tidus
Rod of Darkness Magic +5%, Darktouch   Yuna
Ice Ball Strength +5%, Icestrike   Wakka
Shimmering Blade Piercing, Strength +5%, Magic 5% 1 slot Auron
Force Knuckles Strength +5%, Magic +5%   Rikku
White Bangle Ice Ward, HP +5%   Lulu
Blue Armlet Water Ward, Magic +5%   Kimahri
Potion
Phoenix Down
Antidote
Eye Drops
Echo Screen
Soft
     

Lake Macalania

Sonic Steel First Strike. Strength +3%   Tidus
Halberd Magic +5%, Magic +3%, Piercing   Kimahri
Force Knuckles Magic +5%, Strength +3%   Rikku
Serum Ring HP +10%, Poison Ward   Yuna
Echo Bangle HP +10%, Poison Ward   Lulu
Echo Armlet Silence Ward 1 slot Kimahri
Soft Bracer
Stone Ward 1 slot Auron
Soldier's Targe HP +10%, HP +5%   Rikku
Potion
Phoenix Down
Antidote
Eye Drops
Echo Screen
Soft
     
 

Mt Gagazet (Wantz)

Double-Edge Firestrike, Icestrike 1 slot Tidus
Conductor Initiative 3 slots Yuna
Double Penalty Sleeptouch, Silencetouch, Darktouch   Wakka
Booster Cactuar Magic Booster, Magic +10%, Magic +5% 1 slot Lulu
Trident Firestrike, Lightningstrike, Icestrike   Kimahri
Shimmering Blade Piercing, Strength +10%, Strength +5%   Auron
Survivor Alchemy, Strength +10% 2 slots Rikku
Tetra Shield HP +10%, Defence +10% 2 slots Tidus
Blessed Ring Magic Defence +10%, Magic Defence +5%, Zombie Ward 1 slot Yuna
Tetra Armguard HP +10%, MP +10% 2 slots Wakka
Shell Bangle SOS Shell 2 slots Lulu
Tetra Armlet HP + 10%, Defence +10% 2 slots Kimahri
Blessed Bracer HP +10%, Zombie Ward 2 slots Auron
Haste Targe SOS Haste 2 slots Rikku
Potion
Phoenix Down
Antidote
Eye Drops
Echo Screen
Soft
Power Distiller
Mana Distiller
Speed Distiller
Ability Distiller