Solved Vault on GUI Config ?

hey guys i have never tried to do this but i have made a gui with prices and stuff and the people might want to change the prices how i can do that ?
for example i want in the gui to be an option to add in the config to add price but the gui seems like this with buying.

Code (Text):

        case RABBIT_HIDE:
            Double clsay = econ.getBalance(player);
            if (clsay >= 15000.00){
                econ.withdrawPlayer(player, 15000.00);
                player.sendMessage("You just bought.....");
                player.closeInventory();
                player.playSound(player.getLocation(), Sound.NOTE_PLING, 3, 3);
                }
            }else{
                if(econ.getBalance(player) < 15000.00){
                    player.closeInventory();
                    player.sendMessage("§cYou don't have enough money to afford it.");
                    player.playSound(player.getLocation(), Sound.NOTE_BASS, 3, 4);
                }
            }
            break;

but the thing is i want to add the 3 of them to be in gui to change the price by the config how i can add them to the config to change the money value? i just set them to the config with the same name? or i just leave the players to play with the current prices that this type of game has?
1. if (clsay >= 15000.00){
2. econ.withdrawPlayer(player, 15000.00);
3. if(econ.getBalance(player) < 15000.00){

this is how it should look in the config.

Code (Text):

Slot[1]:
Price:           <===

 

i also tried this one but it's not seems to be correct

Code (Text):

        case WOOD_HOE:
            Double clsay = econ.getBalance(player, getConfig().getDouble("Slot1.Price") >= clsay);
            if (clsay >= clsay){
                //buy stuff
            }else{
                if(econ.getBalance(player) < clsay){
                            //send not money message.

getBalance has red line thought and if i click it its just making it as like this
econ.getBalance(player); than econ.getBalance(player, getConfig().getDouble("Slot1.Price") >= clsay);

what about this:

Code (Text):

            Double reward = Double.valueOf(this.getConfig().getDouble("MONEY_ITEM"));
            if (reward >= reward){
                econ.withdrawPlayer(player, reward);
                player.closeInventory();
                player.playSound(player.getLocation(), Sound.NOTE_PLING, 3, 3);
                }
            }else{
                if(econ.getBalance(player) < reward){
                    player.closeInventory();
                    player.sendMessage("§cYou don't have enough money to afford it.");
                    player.playSound(player.getLocation(), Sound.NOTE_BASS, 3, 4);

 

i think i solved it guys.

Code (Text):

          Double bank = econ.getBalance(player);
          int price = this.getConfig().getInt("Price");
            if (bank >= price){
                econ.withdrawPlayer(player, price);
                player.closeInventory();
                player.playSound(player.getLocation(), Sound.NOTE_PLING, 3, 3);
                }
            }else{
                if(bank < price){
                    player.closeInventory();