Mark
Those items can be sold to NPC Mark
Bag of Pollem - 40$Band Aid - 0.5$
Bird Beak - 30$
Bitten Apple - 6.50$
Bottle of Poison - 0.5$
Bug Gosme - 0.5$
Comb - 100$
Dark Gem - 0.5$
Dragon Scale - 0.5$
Dragon Tooth - 610$
Earth Ball - 0.5$
Electric Box - 20$
Enchanted Gem - 0.5$
Essence of Fire - 0.5$
Feather - 7.50$
Fur - 13$
Future Orb - 15.50$
Ghost Essence - 0.5$
Horn - 25$
Ice Orb - 32.50$
Leaves - 8.50$
Magikarp Fin - 1$
Nail - 10$
Piece of Steel - 0.5$
Pinkan Fruit - 50.000$
Pot of Lava - 18$
Pot of Moss Bug - 7.50$
Rubber Ball - 0.5$
Ruby - 100$
Sandbag - 15$
Screw - 0.5$
Seed - 0.5$
Small Stone - 0.5$
Snowball - 0.5$
Stone Orb - 16.50$
Straw - 0.5$
Tooth - 8$
Water Gem - 0.5$
Water Pendant - 10$
Those items can be bought from NPC Mark
Medicine - 10$Revive - 250$
Max Revive - 350$
Pokeball - 5$
Greatball - 20$
Superball - 50$
Ultraball- 130$
Pokebag- 10$
Greatbag - 100$
Superbag - 500$
Ultrabag - 1.000$
Small Potion - 5$
Great Potion - 10$
Ultra Potion - 22$
Hyper Potion - 55$
Ultimate Potion - 135$