Great Sword

A Great Sword is a Long Sword-class weapon available in both Golden Sun and Golden Sun: The Lost Age. In the first game it is bought in the towns Tolbi, Lunpa, and Lalivero and in the second it is bought in the towns Apojii Islands and Contigo. Being a Long Sword-class weapon, a Great Sword can be equipped on Isaac, Garet, Felix, and Piers. It increases the wielder's base Attack rating by 90 points, and is therefore the strongest and most expensive common weapon in either game. Its buy value is 7000 coins and its sell value is 5250 coins.

In Golden Sun, Great Swords are the strongest common weapon in any shop. However, it's entirely possible it will never be bought and equipped because at Tolbi Springs you can redeem your Lucky Medals to acquire all sorts of strong weapon and armor artifacts, including the Assassin Blade which is a Light Blade-class weapon with the exact amount of attack as a Great Sword and a deadly Unleash effect, and these items can be won as prizes without having to pay a single coin for them. Ideally, the party should outfit itself with the superior equipment at Tolbi Springs with all its Lucky Medals before even shopping around at the normal vendors.

In Golden Sun: The Lost Age, much of the game's focus is on completing puzzles in the dungeon-style locations that provide as rewards weapon artifacts far superior to commonly bought weapons and even weapon artifacts that can normally be bought in vendors, so you should not buy and equip this weapon because you can find and buy stronger artifacts easily in the Great Eastern Sea quite easily even before reaching Apojii Islands. Note that if this game is being played without any data transfer or with a Password that's either Bronze or Silver-level, when Isaac's party joins Felix Isaac will be equipped with a Great Sword, which is of course far inferior to the equipment Felix's party will surely have amassed by that point.