[NRCore] Sell Command

public int FeedPower { get; private set; }

public int SellValue { get; private set;}

            if ((n = elem.Element("feedPower")) != null)
                FeedPower = Utils.FromString(n.Value);
            else
                FeedPower = 0;

            if ((n = elem.Element("sellValue")) != null)
                SellValue = Utils.FromString(n.Value);
                else
                SellValue = 0;

<sellValue>1000</sellValue>

    class SellGoldCommand : Command
    {
        public SellGoldCommand() : base("sellgold", permLevel: 0, alias: "sellitem") {}
        protected override bool Process(Player player, RealmTime time, string args)
        {
            var gamedata = player.Manager.Resources.GameData;
            int slot = Convert.ToInt32(args);
            var acc = player.Client.Account;
            var slotnumber = player.Inventory[slot];
            
            if (slotnumber == null || slot < 4 || player.Inventory[slot].SellValue == 0)
            {
                player.SendError("Error in one of the following: Empty Inventory, Price is 0, or Eqt slot.");
                return false;
            }
            else 
            {
                player.Credits = acc.Credits += player.Inventory[slot].SellValue;
                player.SendInfo(player.Inventory[slot].SellValue.ToString());
                player.Inventory[slot] = null;
                return true;
            }
        }
    }
    
    class SellFameCommand : Command
    {
        public SellFameCommand() : base("sellfame", permLevel: 0, alias: "sellitemfame") {}
        protected override bool Process(Player player, RealmTime time, string args)
        {
            var gamedata = player.Manager.Resources.GameData;
            int slot = Convert.ToInt32(args);
            var acc = player.Client.Account;
            var slotnumber = player.Inventory[slot];
            
            if (slotnumber == null || slot < 4 || player.Inventory[slot].SellValue == 0)
            {
                player.SendError("Error in one of the following: Empty Inventory, Price is 0, or Eqt slot.");
                return false;
            }
            else 
            {
                player.Fame = acc.TotalFame += player.Inventory[slot].SellValue;
                player.SendInfo(player.Inventory[slot].SellValue.ToString());
                player.Inventory[slot] = null;
                return true;
            }
        }
    }

class SellCommand : Command
    {
        public SellCommand() : base("sell") { }

        protected override bool Process(Player player, RealmTime time, string args)
        {
            int itemslot; 

            if (!int.TryParse(args, out itemslot) || string.IsNullOrWhiteSpace(args))
            {
                player.SendInfo("Usage: /sell <slot>");
                return false;
            }

            var changes = player.Inventory.CreateTransaction();
            var item = changes[itemslot];

            if (item.SellValue != 0)
            {
                player.Credits += item.SellValue;
                changes[itemslot] = null;
                Inventory.Execute(changes);
                return true;
            }
            else
            {
                player.SendInfo("This item is worthless. Just as you.");
                return false;
            }
        }
    }