Where to buy specialty Pokéballs?

I know that some of them can be bought in some Pokécenters, but can light balls and heavy balls be bought somewhere?

(I'd really like an exhaustive list, if possible).

Solution 1:

Poké Balls that can be purchased from shops:

Anywhere

• Poké Ball
• Great Ball
• Ultra Ball
• Premier Ball (by purchasing 10 Poké Balls)

Route 2

• Heal Ball
• Luxury Ball
• Nest Ball

Royal Avenue

• Heal Ball
• Nest Ball
• Timer Ball

Paniola Town

• Net Ball
• Repeat Ball
• Timer Ball

Route 8

• Dive Ball
• Dusk Ball
• Quick Ball

Any other Poké Ball, including the Apricot Balls from generation 2 games, can't be purchased, but Master Balls can be won from the Lottery in Hau'Oli Town, or the Big Dreams lottery in Festival Plaza.