Technically there's infinite master balls because you can win one from the lottery in lilycove city in the dept store.
you can if you have a Master Ball
In the Aqua Hideout.
Right of Lilicove
die
you can get a master ball by winning the lottery in lilycove
Master balls cannot be bought in any Pokemon game.
Quick balls don't exist in sapphire.
no the master ball works strait away without doing anything to the Pokemon
throw a master ball
You can find it in Archie's Base. Make sure to grab it, because there is no way to come back later and get it if you don't.
there's only one but you can trad a Pokemon holding a master ball from another game
team aqua hideout at lilycove city