This is a Payment System or "Shop" where you pay a item to get the product. Yes, it is a dispenser shop, but it has an "Smart Item Payment Machine" from Sethbling. It is a concept of item sorting device that detects what item you just payed. I also give credit to ACtennisAC and BuncyTheFrog because they came up with this orginal idea ahead of anyone I believe. Here are their videos:

Sethbling http://www.youtube.com/watch?v=UWZEDU8siP8

ACtennisAC http://www.youtube.com/watch?v=OkwspeVJB4Q

BuncyTheFrog http://www.youtube.com/watch?v=HKezq-DTeQA



This is how she works, when you throw an item into the system, it will get caught by an Smart Item Payment Machine. If the item you payed is an diamond it will let the redstone signal travel so that the dispenser will dispense an enchanted golden apple, but if it is a different item, then the item wil get thrown, activates a plate, which will extend the piston so that the redstone signal can't travel on.

Additional Notes

There are some rules to this machine

1. Do not pay to much at once (it will not break the machine but golden apple randomly comes out).

2. Please replace the water with ice if you see water behind the pressure plate (AKA: Paying Hole).