Toilet Buy-System by RevX

Now that Minecraft 1.5.1 has a new item, the Weighted Pressure Plate, i thought of re-doing the buy system from the Minecraft Dota Map.

It was simple but the wiring was a little complex for my taste. so i devised a 'toilet' system.
Once the number of items are in the weighted pressure plate, a sound will announce that the Item has been dispensed and 'Flushing' is required.

A level or a button adjacent to the item hole is provided to flush the items from the pressure plate.

Additional Notes

The basic wiring and overall mechanism is done and works great. now I'm trying to make some kind of structure to house it, like the shops as seen in Minecraft Dota.
Drop required number of items (depending on level) ----> (pressure level reached,) chime and item dispensed---> Flush