Zappo
Explorer
Depends... in my Dragonlance campaign - no way. Only very big cities would have maybe one magical shop, which will usually have a stock of minor items and a bunch of more powerful things which may or may not be what the PCs were looking for. However, the campaign doesn't usually lead the PCs to big cities.
In the Planescape campaign, on the other hand, I assume that any minor item like potions, low-to-medium level scrolls, and things like can be easily found in Sigil's Great Bazaar. You can also find more powerful things, but you'll have to look a bit carefully and it may take some time. At any given time, the Bazaar may contain some powerful items for sale, but the PCs will have to know where to look. And of course, they will rarely be what the players want.
No way at all that a player says "I want a +4 keen flaming returning shuriken" and has a reasonable chance of finding it.
For prices, I use the DMG prices, slightly increased; the character can use a Diplomacy opposed check to lower it (even below the DMG price, if the check goes very well).
In the Planescape campaign, on the other hand, I assume that any minor item like potions, low-to-medium level scrolls, and things like can be easily found in Sigil's Great Bazaar. You can also find more powerful things, but you'll have to look a bit carefully and it may take some time. At any given time, the Bazaar may contain some powerful items for sale, but the PCs will have to know where to look. And of course, they will rarely be what the players want.
No way at all that a player says "I want a +4 keen flaming returning shuriken" and has a reasonable chance of finding it.
For prices, I use the DMG prices, slightly increased; the character can use a Diplomacy opposed check to lower it (even below the DMG price, if the check goes very well).