As a DM, you aren't required to obey the strict prices set in the PHB. The prices listed are mostly just used as guides for creating characters on a budget; once you're in the adventuring world, goods cost whatever the local shops value them at, with the PHB listed prices as suggestions for "fair market" prices.
That being said, there's any number of ways ...
1. None of the named magic items are found in the index...
... annoying, but it seems only the categories of magic item (rings, rods, staffs, wondrous items etc.) are in the index, not the specifics. Instead of using the core books to search for specific items, I recommend using one of the SRD websites - I use 5thsrd.org to quickly search for individual ...
By haggling, probably unsuccessfully.
In the real world, I can walk into a grocery store (supermarket or locally owned) that sells eggs in cartons of a dozen, pick up a carton for $1.50, calculate that that works out to 12.5¢ per egg, and try to buy 2 eggs at checkout for 25¢, but the clerk will refuse to sell me those 2 eggs because the store does not ...
The answer to this is two-fold. So, to give the TL;DR first...
The Equation you cited is most likely accurate, but it only applies to Adventurer's League play. It is not part of the core rules.
Where the Equation Comes From
The pricing model that you cited in your answer, is derived from the Adventurer's League guides. As you mentioned, there was the Tyranny ...
Black, pure, abyssal bloodiron, strung with a dragon's vocal cords and demilich teeth (~44,000 gp)
I'm starting with the following assumptions:
Pun-Pun can only exist in D&D 3.0/3.5, so only materials detailed in that edition qualify.
We're only interested in the most expensive material, per pound, which could feasibly be used to build a lute, and will ...
Contextually, Bob's correct
If the campaign is a series of tombs of horrors, then that ring of cure light wounds is an item beyond price. If the party can't leave the dungeon to resupply and can't get down to one encounter per day (i.e. the so-called 15-minute workday) via spells1, that ring of cure light wounds is a literal lifesaver.
In other words, if ...
11k gp renovation; 10gp/day upkeep/operating costs, or maybe less.
I'll tell you what's reasonable: referencing 2e's The Castle Guide. In previous years I've done comparisons between the 5e DMG's "big ticket" items--keep/small castle, large castle, and tower--and the costs of constructing such buildings as described in The ...
This is more of an industrial mining question than an RPG one, but pretty much the gaming answer is: whatever you want it to be.
The thing with "gold ore" is that it's a mixture of valuable gold and worthless rock and that ratio decides what you can get for the ore.
Going by this site (which, of course, talks about modern day mining) a chunk of high grade ...
Waterdeep: Dragon Heist provides an option
Warning: possible spoilers of the adventure ahead.
Besides the option above, if you want to build one from the ground up, your best guideline is to use the building cost of a Guildhall or Trading Post, presented on page 128 of the Dungeon Master's Guide. Pages 126-127 of the DMG also provide guidelines for the ...
First off, I somewhat disagree with Jeremy Crawford's tweet. Since no cost or amount of holy water is listed, I (as DM) would not expect you have to expend an entire flask -- I would expect it to be something like what you'd see in a modern Catholic church, where you only use enough holy water to wet the fingertips (or a pinch of iron and silver); a ...
Value is absolute
The rules of D&D seem to assume that value is absolute, not relative. That is to say, things have the value that they have (especially precious items like gems and jewels, artwork, precious metals, etc.) and that's unrelated to how much you might be able to actually buy and sell them for in your present circumstances. A 100gp pearl is ...
Erin - Kind Of
This part of what Erin said is right:
Erin thinks that the DMG guidelines are flexible and we should
consider the cost of the Ring of Cure Light Wounds in context of
other, existing magic items.
DMG p. 282 says something pretty similar in the bottom right corner (SRD version):
Not all items adhere to these formulas directly. The reasons for ...
On page 133 of the Dungeon Master's Guide, there is a table labelled Magic Item Rarity which gives a rough guidelines on the value of magical items, from Common rarity (for 50gp upwards) through to Legendary rarity (for 50,000gp or more).
It's going to be up to the DM
5e doesn't cover schooling costs for Wizards, but I'll leave it to others better versed in D&D lore to see if it's covered in other editions and, if so, to update the cost to match 5e.
But it's okay that there isn't a RAW answer here. Your question is more about creating a background hook, not about a mechanical need.
As previous answers have suggested, magic item prices are broadly at your discretion, with suggested prices provided by rarity in the DMG (p. 135).
However, there is quite a convincing argument that some of the rarities are either too low or too high, possibly leading to very powerful items being too common, and therefore too cheap if you allow them to be ...
Star metal at 10,000 gp per pound
Star Metal is the most expensive material I could find. From Forgotten Realms Adventures (AD&D 2e, p.141):
A typical price was 10,000 gp per pound (22,100 gp/kg)
From Complete Arcane (3.5e, p.141):
Starmetal is extraordinarily hard and is equal to adamantine for all purposes. (...) Creating a weapon of star metal ...
No, buying a cheap pearl for 100 gp doesn't work
The rules say "worth at least 100 gp", not "bought for at least 100 gp". If you buy a cheap pearl from another character for 100 gp, it doesn't become 100 gp worth. And vice versa, if you steal a 100-gp pearl for free, it is still 100 gp worth. This is true for any items, not only for material spell ...
The rules provide no clear answer to the cost of purchasing a tavern.
Maintenance costs of a tavern are described in detail (DMG 127). The purchase of a tavern is not described in detail, but there are a few things that provide guidance.
Building A Stronghold (DMG 128) offers pricing for land and estate deeds which are the listed first step to building a ...
OK, so there are basically three costs being added together here:
Base cost of the Elven Thinblade: 100 gp
Masterwork cost (prerequisite for any magic weapon): 300 gp
+2-equivalent cost (+1 keen, as keen is a +1-equivalent): 22×2,000=8,000 gp
Total is 8,400 gp: outside of your budget.
A +1 thinblade would be 12×2,000+300+100 = 2,400 gp. A ...
D&D 5e has abstracted this away into Lifestyle Expenses:
Lifestyle expenses provide you with a simple way to
account for the cost of living in a fantasy world. They
cover your accommodations, food and drink, and all
your other necessities. Furthermore, expenses cover the
cost of maintaining your equipment so you can be ready
when adventure ...
Canon RAW answer is that the DMG gives some orientative guidelines, as @Tashio mentioned.
Some players think that the rarity classification leaves much to be desired, however; Giant in the Playground user Saidoro wrote the article Sane Magic Item Prices to address the problem, you might want to check it out and adapt it to your own needs.
The rules for grand jewels don't peak their value at 5,000 gp.
Grand Jewels (5,000 gp or more): clearest bright green emerald; diamond; jacinth; ruby
Grand jewels can be worth more than 5,000gp, instead of setting a cap on them the rules do the opposite and set a minimum. The lowest value diamond you can find is 5,000 gp.
Mandrake is a common plant of no particular value
Mandrake is a common flower (in many parts of Europe).
There is no indication that this material component should be any pricier, or harder to find, than the other materials in the list. Heck, it’s in the middle of a list of common materials. Compare it to mistletoe, the material component of the Goodberry ...
Riverine from Stormwrack is water trapped between carefully-shaped walls of force. It’s fantastically expensive (2,000 gp/lb. for non-armor item), would be preposterously difficult to make into a lute, and is basically indestructible. Sounds perfect for Pun-Pun’s lute.
I cannot guarantee that riverine is distinctly the most expensive special material in the ...
There is no Official Source
It's not priced anywhere in the PHB, MM, or DMG, meaning that it would be completely up to your DM.
If your DM is feeling generous, they may say that a component pouch includes it. Alternatively they might have you forage for it.
Your DM may Still Disallow it
MM pg. 188
Shaping a mixture of clay, ash, mandrake root, and ...
The 3.5 Dungeon Master's Guide contains a small table on building costs. Page 101.
But, for detailed guidelines on how to handle character-made buildings in 3E (including detailed cost and construction time rules), refer to the Stronghold Builder's Guidebook. It is a 3.0 book, but requires minimal updating.
As far as renting goes... you could calculate the ...
Your calculation is off. The expected value of 4d4×10 is 100, more than double the cost of the pack.
Even for classes that buy relatively expensive starting items (mainly armor) this budget won't be tight (they get 5d4×10, expected 125, chain mail costs 75). The possibility of rolling low is a risk you accept for the possibility of getting more ...