CobbleDrock Shop: an economy system for CobbleDrock servers. Two NPCs: one sells and the other buys 86 items. Uses scoreboard money, has its own admin items and eggs, configurable prices, and catalog reset.
LojistaSERP adds a shopkeeper NPC to buy items from SERP Pokedrock and DetailedPokedrock in game, using the same money scoreboard used. Requires both addons installed. This is an unofficial companion.