I was wondering how other GMs handle shopping in their game. Do you let your players roll if they're looking for a specific item, to see if the shop sells it? Do you roll yourself to see if the item is available? What kind of skill do you use for this?
And what if, instead of asking the shop keeper if they sell something, they just have a look around to see if they can find anything useful. As a GM, do you ask what it is the player is looking for, and then let them roll a perception check?
The reason I ask is because I plan to add a pawn shop to The Wheel (used as the setting for the Sabacc modular encounter from Suns of Fortune), and my players might decide to have a look around to see if they can buy anything.
I'm also curious to see if anyone uses a system to determine the quality of an item. Let's say one of your players wants to buy a new Blaster, but the shop is out of new ones. Maybe they have a used one available, but it's not in the best condition. Maybe the trigger has a tendency to jam. So the price for the used blaster might be lower than for a new one, but it comes with a setback die. That sort of stuff. Do you roll for things like that?
Anyone have some experience in this area?