I suggest few 'fairly simple' changes to haggling skill so it could be somewhat usefull (IMHO now its completly useless):

- make it passive so when we want to buy or sell something from shop we can haggle automatically

I. If we want to pay for specific item/s:

1. Haggling skill check should be triggered automatically (once per item)

a) if success: (message generated: you've succesfully bargained 'itemname')

- will reduce price temporary (but only once per restock) of potentially buyed item
using formula below:

100 points of skill in haggling should discount price of one specific item for about 30%

less points should discount prices proportionally so:

75 points of haggling - 22%,
50 points of haggling - 15% ... [etc]

b) If failed: (no message generated)

- price of potentially buyed item wont change and haggling check cannot be triggered for this item again until next
shop restock / stocktaking

I. If we want to sell specific item/s:

1. Haggling skill check should be triggered automatically (once per item)

a) If success (message generated: you've succesfully bargained 'itemname')

- having 100 points of haggling skill will temporary raise value (but only once per restock) of potentially selled item by 30% (using formula/rules above)


b) If failed

-- value of item wont change at all and if we want to haggle with this specific item again we must wait untill next shop restock.

Important things to note:

Restocking/stocktaking should reset values of potentially buyed items to their default values.
If we leave shop value of potentially selled items (if haggled sucessfully) should be reseted to their default values.