[1.10.2] Villager Trading Prices?

[Willbl3pic]

My custom trades don't seem to be making any sense! Sometimes they fit perfectly with my code, other times they don't.

 

Code:

 

package net.anti_quark.EssentialFeatures.common.entity;

import net.anti_quark.EssentialFeatures.common.block.ModBlocks;
import net.minecraft.entity.passive.EntityVillager;
import net.minecraft.entity.passive.EntityVillager.ITradeList;
import net.minecraft.entity.passive.EntityVillager.PriceInfo;
import net.minecraft.entity.passive.EntityVillager.EmeraldForItems;
import net.minecraft.entity.passive.EntityVillager.ListItemForEmeralds;
import net.minecraft.init.Blocks;
import net.minecraft.init.Items;
import net.minecraft.item.ItemStack;
import net.minecraftforge.fml.common.registry.VillagerRegistry;

public class VillagerMechanic {

protected static final VillagerRegistry.VillagerProfession PROFESSION = new VillagerRegistry.VillagerProfession("mechanic", "minecraft:textures/entity/villager/villager.png", "");
    protected static final VillagerRegistry.VillagerCareer CAREER = new VillagerRegistry.VillagerCareer(PROFESSION, "mechanic")
    		.addTrade(1, new EmeraldForItems(Items.REDSTONE, new PriceInfo(20, 1)))
    		.addTrade(1, new ListItemForEmeralds(new ItemStack(Items.REDSTONE), new PriceInfo(4, 64)))
    		.addTrade(2, new ListItemForEmeralds(new ItemStack(Blocks.REDSTONE_LAMP), new PriceInfo(1, 3)))
    		.addTrade(2, new ListItemForEmeralds(new ItemStack(ModBlocks.stainedLamp), new PriceInfo(1, 3)));
        
    public static void addVillagers ()
    {
    	VillagerRegistry.instance().register(PROFESSION);
    }
}

 

 

And here are the trades in-game:

 

Trade 1, works as expected:

 

.addTrade(1, new EmeraldForItems(Items.REDSTONE, new PriceInfo(20, 1)))

 

Trade 2, doesn't work as expected:

 

.addTrade(1, new ListItemForEmeralds(new ItemStack(Items.REDSTONE), new PriceInfo(4, 64)))

 

Trade 3, works as expected:

 

.addTrade(2, new ListItemForEmeralds(new ItemStack(Blocks.REDSTONE_LAMP), new PriceInfo(1, 3)))

 

Trade 4, doesn't work as expected:

 

.addTrade(2, new ListItemForEmeralds(new ItemStack(ModBlocks.stainedLamp), new PriceInfo(1, 3)));