A Specific Cursed Item generally costs a fraction of the real item to craft, often around 10% (Incense of Meditation 4,900 gp, Incense of Obsession 500 gp) or 20% (+2 Sword 8,315 gp, Cursed -2 Sword 1,500 gp). An exception is if the item is especially useful, such as the Scarab of Death (80,000 gp) which could be given to an enemy to kill him in one round.
A normally functioning item with a drawback or dependent curse condition (e.g. only works in the hands of a creature with a particular alignment) should reduce the cost by around 10% to 30%, or more depending on severity. The crafting guidelines state that an item reduces in price by 10% if they require the wielder to have a certain skill, and 30% to have a certain class or alignment. You shouldn't let players pick this as a drawback while crafting, since a wizard can just create himself a staff only usable by wizards for a big discount at no penalty.
The spells remove curse and break enchantment only free a person from a cursed item, but do not turn the item into an uncursed version of itself. Since the price difference between a cursed item and its uncursed version is significant, a single spell shouldn't be enough to repair it permanently, although wish can repair items at an XP cost. A wizard with the correct item crafting feat could probably repair a cursed item by paying the difference.
Note that while remove curse does remove a curse from any item except a weapon, shield or armour, it doesn't necessarily turn the item into a properly working version. The item may have been created cursed by accident, or have broken somehow and lost its original power.
An alternative way of creating a cursed item appears in Dragon Magazine #348, October 2006, in the article "Bestowed Curses". The spell bestow curse can turn a weapon into a cursed item of its kind, so a +4 sword becomes a -4 sword. Since bestow curse is a Permanent duration spell, rather than Instantaneous, an item temporarily cursed in this manner returns to its original form when the curse is broken.
Cursed magic items are just normal magic items with hidden, usually negative, magic properties. Therefore they should function just like normal magical items, except for when trying to detect the properties of the item.
If the BBEG is able to equip/place the item on the player appropriatly, then the curse should take affect.
If not, then Dimensional Shackles would lose a lot of their intended functionality.
These shackles have magical runes traced across their cold iron links.
Any creature bound within them is affected as if a dimensional anchor
spell were cast upon it (no save). They fit any Small to Large
creature. The DC to break or slip out of the shackles is 30.
Best Answer
I don't really know much about Pathfinder, but if I had to make up some prices, I'd assume that, if the players want to buy it, it's because they have a use for it. Thus, I'd start from the same price as for the corresponding uncursed item, on the assumption that they'll be about as useful in the hands of a clever player, and then maybe reduce that a bit (say, 10% to 30%) if there seems to be no obvious way to turn the curse into an advantage.
Note that the above is for players deliberately seeking to buy a cursed item. It might be possible to find disreputable merchants trying to pass off a cursed item as the real thing, possibly at a considerable discount, but such merchants would be unlikely to advertise the item as cursed or openly reveal its nature (since they wouldn't expect most buyers to actually want a cursed item).
Similarly, since there presumably isn't much market for such items (except perhaps in very disreputable circles), I wouldn't expect most merchants to want to buy them. Indeed, there might even be laws, or at least strong societal norms, against selling cursed items. (Just try to deliberately buy some unsafe machinery or hazardous waste IRL, and see if anyone will sell you any.) Thus, players looking to sell an item known to be cursed should only be able to do it at a very significant discount, if at all, at least unless they just happen to know the right kind of people (or unless they can pass it off as uncursed).
Indeed, depending on how involved you want to make this, finding the kind of people who engage in trading cursed items (and/or convincing them that you're genuinely interested in buying them) might constitute an interesting subplot in and of itself, and could be used to generate future plot hooks by giving the players some connections to the not-quite-so-public side of the local economy. Or, if you'd rather not to go there, you can just abstract it away and say "yes, you can buy it, but it'll cost almost as much as the uncursed kind."
Edit: I did find something in the Pathfinder rules that sort of talks about the price of cursed items, namely a remark that "Cursed items can be sold, if the curse is not known to the buyer, as if they were the item they appear to be."
This at least implies that, if the players are unscrupulous enough, they might be able to sell their cursed items at full price simply by not revealing that they're cursed (and getting away before the buyer notices). Of course, if the buyer decides to identify the item and beats the DC by 10 or more, the players might have some explaining to do.
This also suggests that an equally unscrupulous trader might be willing to pay a reasonable fraction of the full price even for an items they know to be cursed, on the assumption that they'll be able to trick someone else into buying it for the full price.
It also suggests that any merchants (more or less) openly selling cursed items should not be willing to sell them for too much less than the full price, since they could presumably always either try to pass them off as uncursed themselves, or at least find a buyer willing to do so. The exact discount, as compared to the price of an uncursed item, should depend on the risk and consequences of being caught doing that, and would seem likely to vary between vendors.