8 Shops of the Poke World

PokeMarts
Commonly: Basic Balls, one or two Specialty Poke Balls,
Possibly: Great Balls, two or more Specialty Poke Balls, Held Items 2500 or less, one to three Evolutionary Stones or Keepsakes, one to three TMs
Rarely: Ultra Balls, several Specialty Poke Balls, Held Items 2500 or more, large selection of Evolutionary Stones and Keepsakes, large selection of TMs

Pharmacy
Commonly: Candy Bars, Potions, Antidotes, Awakenings, Burn Heals, Ice Heals, First Aid Kit, Chemistry Set,
Possibly: Full Heal, Revive, X-Items
Rarely: Full Restore, Vitamins
Very Rarely: Pester Balls

Travel Shop
Commonly: All items listed in the "Travel Gear" section, Cooking Set, Dowsing Rod, Poke Ball Tool Box, Portable Grower, Snow Boots, Running Shoes, Flippers, Jungle Boots, Old Rods, Hand Nets
Possibly: Light Armor, Stealth Clothes, Dark Vision Goggles, Gask Masks, Helmets, Re-Breathers, Good Rods, Glue Cannons, Weighted Nets, Light Shield
Rarely: Heavy Armor, Heavy Shield, Super Rods, Wonder Launcher, Caltrops, Smoke Balls
Very Rarely: Capture Stylers

Market:
Commonly: Candy Bars, Enriched Water, Tier 1 Berries, Baby Food,  Poffin Mixer
Possibly: Super Soda Pop, Leftovers, Tier 2 Berries, Apricorns
Rarely: Sparkling Lemonade, MooMoo Milk

Herb Shop
Commonly: Energy Powder, Heal Powder, Poultices, Tier 1 Berries, Honey
Possibly:  Energy Root, Revival Herb, Tier 2 or 3 Berries

Fashion Shop
Commonly: Fancy Clothes, Sunglasses, Running Shoes, Contest Accesories, Contest Fashion, Groomer's Kit, Egg Warmers, Poffin Mixer

Occult Shops
Commonly: Useless hogwash with no effect
Possibly: Cleanse Tags
Very Rarely: Magic Flutes