Xanathar's Guide to Everything describes the gold obtained from selling a magic item.
| Rarity | Base price* |
|---|---|
| Common | 100gp |
| Unommon | 400gp |
| Rare | 4,000gp |
| Very rare | 40,000gp |
| Legendary | 200,000gp |
| * Halved for a consumable item like a potion or scroll |
It also describes the cost of making a spell scroll.
| Spell Level | Time | Cost |
|---|---|---|
| Cantrip | 1 day | 15gp |
| 1st | 1 day | 25gp |
| 2nd | 3 days | 250gp |
| 3rd | 1 workweek | 500gp |
| 4th | 2 workweeks | 2,500gp |
| 5th | 4 workweeks | 5,000gp |
It describes the cost of buying magical items.
| Rarity | Asking price* |
|---|---|
| Common | (1d6 + 1) × 10gp |
| Unommon | 1d6 × 100gp |
| Rare | 2d10 × 1,000gp |
| Very rare | (1d4 + 1) × 10,000gp |
| Legendary | 2d6 × 25,000gp |
| * Halved for a consumable item like a potion or scroll |
And specifically addresses buying spellscrolls in shared campaigns.
| Spell Level | Cost |
|---|---|
| Cantrip | 25gp |
| 1st | 75gp |
| 2nd | 150gp |
| 3rd | 300gp |
| 4th | 500gp |
| 5th | 1,000gp |
The Dungeon Master's Guide describes how rare are scrolls for given levels.
| Spell Level | Rarity | Save DC | Attack Bonus |
|---|---|---|---|
| Cantrip | Common | 13 | +5 |
| 1st | Common | 13 | +5 |
| 2nd | Uncommon | 13 | +5 |
| 3rd | Uncommon | 15 | +7 |
| 4th | Rare | 15 | +7 |
| 5th | Rare | 17 | +9 |
So, with that, we can build the following price for a 4th level Spellscroll (this is an example):
- Sell Price: 2000gp
- Crafting Price: 2500gp + reagents cost + 2 workweeks
- Buy Price: 5500gp (half of the average 11k gp cost of buying a magical item) or 500gp (if using the shared campaign variant)
Now, the buying price being higher than the selling price is fine for me, that's standard and simple economics within many game systems.
But the crafting price is higher than the selling price. It doesn't make sense. Unless no one in the market wanted to ever buy a spell scroll (but I'm sure many wizards do), the prices would follow the logic: crafting < selling < buying. So a scroll scribe makes a profit by selling; a distributor makes a profit by buying low and selling high; and the poor adventurer spends half his precious loot on them.
Do the prices just not make sense? Or is it reasonable to expect the crafting costs to be higher than the selling costs?