/// <summary>
/// Sells the placeable and returns some gold to the player.
/// </summary>
public void SellPlaceable(Placeable placeableToSell)
{
placeableToSell.Sell();
Player.Instance.Gold += GetSellPrice(placeableToSell);
// Return to the pool
PlaceablePool.Instance.ReclaimObject(placeableToSell);
}