Lua Adding cost to NPC script

[Elvarion]

So ive got a script that works like the Djinns where you trade items for other items.

Im gonna extend this script and make it into a Blacksmith.
He will give you items if you bring him certain items + a payment (in gold)

Its the cost im having some trouble adding..

local keywordHandler = KeywordHandler:new()
local npcHandler = NpcHandler:new(keywordHandler)
NpcSystem.parseParameters(npcHandler)

function onCreatureAppear(cid)          npcHandler:onCreatureAppear(cid)            end
function onCreatureDisappear(cid)        npcHandler:onCreatureDisappear(cid)         end
function onCreatureSay(cid, type, msg)  npcHandler:onCreatureSay(cid, type, msg)    end
function onThink()                      npcHandler:onThink()                       end

-- Keywords
npcHandler:setMessage(MESSAGE_GREET, "[Blacksmith}, |PLAYERNAME|?")

keywordHandler:addKeyword({'blacksmith'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = '{weapons}{armor}?'})

keywordHandler:addKeyword({'weapon'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = '{Magic Sword}, {Great Axe} ETC ETC'})
keywordHandler:addKeyword({'armor'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = '{Dragon Scale Mail}, {Knight Armor} ETC ETC'})


function ChickenWing(cid, message, keywords, parameters, node)

    if(not npcHandler:isFocused(cid)) then
        return false
    end
  
    if getPlayerItemCount(cid,2195) >= 1 then
        if doPlayerRemoveItem(cid,2195,1) then
            npcHandler:say('Here is your {Enchanted Chicken Wing}. Thanks for the {Boots of Haste}.', cid)
            doPlayerAddItem(cid,5891,1)
        end
        else
            npcHandler:say('Sorry, You dont seem to have any {Boots of Haste}', cid)
        end
        end
      
function FightingSpirit(cid, message, keywords, parameters, node)

    if(not npcHandler:isFocused(cid)) then
        return false
    end
  
    if getPlayerItemCount(cid,2498) >= 2 then
        if doPlayerRemoveItem(cid,2498,1) then
            npcHandler:say('A {Royal Helmet}! Great. Here, take this fighting spirit, I don\'t need it anyway.', cid)
            doPlayerAddItem(cid,5884,1)
        end
        else
            npcHandler:say('Sorry, Your missing some items.', cid)
        end
        end

function MagicSulphur(cid, message, keywords, parameters, node)

    if(not npcHandler:isFocused(cid)) then
        return false
    end
  
    if getPlayerItemCount(cid,2392) >= 3 then
        if doPlayerRemoveItem(cid,2392,3) then
            npcHandler:say('Great, needed some more {Fire Swords}! Here is some {Magic Sulphur}.', cid)
            doPlayerAddItem(cid,5904,1)
        end
        else
            npcHandler:say('Sorry, you dont seem to have enough {Fire Sword}.', cid)
        end
        end

function WarriorsSweat(cid, message, keywords, parameters, node)

    if(not npcHandler:isFocused(cid)) then
        return false
    end
  
    if getPlayerItemCount(cid,2475) >= 4 then
        if doPlayerRemoveItem(cid,2475,3) then
            npcHandler:say('Here is your {Flask of Warrior\'s Sweat} for the {Warrior Helmets}.', cid)
            doPlayerAddItem(cid,5904,1)
        end
        else
            npcHandler:say('Sorry, Your missing some items.', cid)
        end
        end

function SoulOrb(cid, message, keywords, parameters, node)

    if(not npcHandler:isFocused(cid)) then
        return false
    end
  
    if getPlayerItemCount(cid,5944) >= 5 then
        if doPlayerRemoveItem(cid,5944,5) then
            npcHandler:say('Here you go. Ive reforged your {Soul Orbs} into some {Infernal Bolts}.', cid)
            doPlayerAddItem(cid,6529,15)
        end
        else
            npcHandler:say('Sorry, Your missing some items.', cid)
        end
        end
  
node1 = keywordHandler:addKeyword({'enchanted chicken wing'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'Have you found a {Boots of haste} for me?'})
node1:addChildKeyword({'yes'}, ChickenWing, {})
node1:addChildKeyword({'no'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'Alright then. Come back when you got all neccessary items.', reset = true})

node2 = keywordHandler:addKeyword({'fighting spirit'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'Have you found a 2 {Royal Helmets} for me?'})
node2:addChildKeyword({'yes'}, FightingSpirit, {})
node2:addChildKeyword({'no'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'Alright then. Come back when you got all neccessary items.', reset = true})

node3 = keywordHandler:addKeyword({'magic sulphur'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'Have you found 3 {fire swords} for me?'})
node3:addChildKeyword({'yes'}, MagicSulphur, {})
node3:addChildKeyword({'no'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'Alright then. Come back when you got all neccessary items.', reset = true})

node4 = keywordHandler:addKeyword({'warrior\'s sweat'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'Have you found a 4 {warrior helmets} for me?'})
node4:addChildKeyword({'yes'}, WarriorsSweat, {})
node4:addChildKeyword({'no'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'Alright then. Come back when you got all neccessary items.', reset = true})

node5 = keywordHandler:addKeyword({'soul orb'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'Want me to reforge five [Soul Orbs] into some {Infernal Bolts}?'})
node5:addChildKeyword({'yes'}, SoulOrb, {})
node5:addChildKeyword({'no'}, StdModule.say, {npcHandler = npcHandler, onlyFocus = true, text = 'Alright then. Come back when you got all neccessary items.', reset = true})

npcHandler:addModule(FocusModule:new())