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This version relates to Nethack v3. The various spoilers available such as those maintained by Dylan O'Donnell at http: But you rarely see those items in the shops for that amount. And knowing the price of unidentified items such as scrolls, spellbooks and various magic armour allows you to guess what the item is, or at least narrow down the possibilities, without expending a scroll of identify.
From the base price listed in the spoilers, there are modifiers applied to give a list price, then another set of modifiers applied depending on buying or selling to determine the price that each shopkeeper will offer to buy or charge to sell an item. Note that these are all more-or-less deterministic; the prices in the shop are not the random numbers they might seem! These same rules apply to all items in all shops, but of course some shopkeepers are not interested in some types of objects.
If it is food, and you are buying, and you are hungry, cost is times base, depending on how just how hungry you are. Half-eaten food costs 0 but you will be charged the full amount when you take the first bite. Completely empty even the 1-last-charge is used wands cost 0gp. Such empty wands are created by canceling a wand, or wishing for a wand of wishing, and are identified by having "-1" charges. By contrast, wands with 0 charges left are full list price because they might be recharged with a scroll of charging.
Un-ID'd glass get the price of an expensive gem the same gem each time, so the astute can use this to ID glass - see below.
Un-ID'd gems get their list price. Try dropping a cheap one on an expensive one. So it is possible to see e. And because of this random factor, you might find three different scrolls for 80gp - one of which will be Enchant Weapon with this random extra, the other two will be Enchant Armour and Remove Curse at list. Almost no-one gets a discount, these shopkeepers are really tight! Unlike the buy case, this is a random chance not tied to the object so if you refuse the offer, pick up the object and drop it again you will probably get a better price.
It is possible with some work to determine gem type from this info! If you know from some other method e. Identified glass is as the name suggests worthless. Identified gems are treated the same as all other identified objects i. As an aside, throwing an object into a shop will give ownership of that object to the shopkeeper, even if the shopkeeper would not normally buy objects of that class.
You can then attempt to buy the object and the shopkeeper will tell you a price. This can be used in the case where you don't have a suitable shop around e. Usually, shopkeepers trade only in gold. But in some circumstances, shopkeepers will extend credit.
Credit is used up before gold when "p"aying a shopkeeper for purchased goods. Credit lines are per shopkeeper, so you can't build up a credit balance with one shopkeeper and spend it elsewhere. The only way to turn credit back into gold is to pick up gold from the floor of a shop and "p"ay for it. If there is no gold available, you are out of luck. The simplest way to establish a line of credit is to drop gold in the shop. The shopkeeper will add this amount to your credit.
This can be useful if you have intrinsic teleport but no teleport control. You can " c"hat to find the price of an object, drop that amount of gold to build up credit, then pick up an object. If you happen to teleport out of the shop at that point, the value of the goods is deducted from your credit and you won't annoy the shopkeeper and summon the Kops for stealing. Credit can also be offered if you attempt to sell something to a shopkeeper who has no more gold left.
You can also incur debts to a shopkeeper by using a charge on an unpaid charged item such as a wand, tool or spellbook, or using up an unpaid item such as a scroll, potion or food ration. Breaking the door down or doing similar damage will also incur a debt. This debt cannot be removed by dropping the item and has to be paid in cash. If you have a credit balance with this shopkeeper when you use the item, the cost will be deducted from your credit immediately and no debt incurred, assuming your level of credit is larger than the debt.
You can use objects in a shop without having paid for them. But such use will incur a debt to the shopkeeper that has to be paid in cash.
For use-once objects such as scrolls or potions, you will be charged the same price as for a purchase. For comestibles, you will be charged the full price on the first bite, and then if you are interrupted you are left with a free half-eaten comestible. For items with limited numbers of uses, such as wands, spellbooks, and certain tools such as the tinning kit, you will be charged for each use. The item remains unpaid and the same price it was before you used up the charge. If using the object causes the object to disappear e.
The following table explains the cost of using each charge, as a fraction of the cost to purchase it, depending on the object:.
Throwing unpaid projectiles such as arrows or darts will incur a debt equivalent to buying the object if the projectile disappears as usually happens about 1 time in 3 when the projectile hits or lands outside the shop which usually requires a hole in the wall.
It is sometimes possible to steal items from shops. In general, this is probably a bad idea, especially for weak or even medium level characters.
Stealing from shops causes the shopkeeper to be angry and start attacking you. Shopkeepers are pretty tough opponents and usually have at least one offensive wand. It will also summon the Keystone Kops, which are not too tough individually, but there are a lot of them. And if you are on the MineTown level, the Guards will also be angry.
There are a number of ways to escape from the shop without paying. Perhaps the most obvious is to use a teleport spell, wand or scroll, or intrinsic teleport.
Or you can teleport the shopkeeper away with a wand or spell of teleport, or polymorph him either will make the shopkeeper angry. Of you have a wand of digging or a digging implement you have managed to smuggle into the shop, you can dig out of the shop. It is usually better to dig down rather than through walls, because the shopkeeper will charge you for damaging walls, the walls will be repaired fairly quickly, and shop walls are very tough but not impossible to dig through.
And digging down or level teleporting also gets you away from angry shopkeepers and hoards of Kops. But beware if you ever visit that level again! If there is some sort of digging monster on the level e. Umber Hulk, or a Dwarf with a pickaxe , then the monster will occasionally dig through the shop wall offering a means of escape. You can pacify angry shopkeepers you have stolen from if you meet them and "p"ay them enough gold to cover their losses.
You need to be within 2 squares to pay the shopkeeper if you are not both still in his shop. This is risky because the shopkeeper may kill you before you get a chance to talk, as they are tough to kill and do a lot of damage. The shopkeeper will then return to his shop. This will also pacify the guards and remove any Kops that are after you.
This can be used to pacify the guards after you have angered them by accidentally attacking them or being sprung picking locks or drinking from fountains.
This could be considered a bug. If you die on a shop level with an angry shopkeeper and leave a bones file, the shopkeeper will be returned to his shop.
If you then hit the bones file in another game with the same character name, the shopkeeper will remain angry. If you pick up the bones file with another character name, the shopkeeper is no longer angry but still remembers he was robbed.
Clever use of pet dogs or cats can also steal items from shops without causing the shopkeeper to become angry. Make sure your pet is tame and inside the shop, and stand in the doorway. Every so often, the pet will pick up a small, non-cursed object. There is a chance the pet will then drop the object on the square immediately inside the shop door. You can then pick the object up for no cost. This only works for small objects don't expect your kitten to steal that plate mail for you!
You can train your pet to be a better shoplifter by feeding it a tripe ration as soon as it's dropped something for you assuming it is a dog or cat. Gold-loving monsters such as Orcs may wander into a shop and pick up gold left on the ground. You can then wait until they get out of the shop and kill them and recover the gold.
This can be used to build up unlimited shop credit and hence "steal" eveything in the shop if you are patient enough. Non-peaceful monsters may also occasionally pick up items in a shop and walk out with them.
They do the same thing outside shops, but are much less likely to pick up an item inside a shop. You can then kill the monster to recover the item. The chance of that happening depends on the type of item and the monster in question. Magic-users such as orc shamans and gnomish wizards will pick up magic items, and most vaguely-humanoid monsters will pick up weapons, armour, gems and tools.
None of these situations will annoy shopkeepers who apparently trust non-player characters implicitly! The first table is for buys, and assumes you are not silly enough to go shopping with a Hawaiian shirt visible. The second table is for selling to shop keepers. This is much simpler because your charisma has no effect on the deal. You can ask the shopkeeper the price of an item by chat'ing when you are standing on it.
This is the price you will pay to buy it. Then look in the appropriate column under your charisma, and you will know the base cost of the item. This will give you one or two base costs.