It can be very entertaining to take the battle for price supremacy outside of their category.
For a hi fi store to compete with the car dealer over the road, for an air conditioning business to compete with the florist next door etc etc
Find a retailer with frequent specials near your advertiser and you're off!
You need an actor who can play the role of Paranoid Advertiser.
Never forget, a bizarre voice isn't funny per se but a serious voice saying bizarre things is!
There's no strict format, click on the example below then try the template on the next brief you get for a price focused advertiser.
This example is: Smyths Betta Electrical