kitsune9
Adventurer
I gamed in a group that often got sidetracked off on extended trips to the market for the purchasing and bartering whims of a pair of players. The DM seemed to enjoy this so it was indulged. After one particular session when nothing was accomplished but 4 hours of shopping, those of us who were politely/silently waiting for something to happen with our characters protested the evening as a waste.
I try to end adventures toward the end of a session to avoid this. I don't allow role playing for shopping unless it's actually part of the adventure, but if it's standard upkeep or upgrading, I tell my players to take care of it between games because they know the rules regarding buying and selling items and what I allow so I don't need to watch over their buying process.
It was cool that you derailed the other players attempt to hog the spotlight for something as mundane as shopping.