You go over to the traders and listen to what they say.

Here is a piece of their conversing:

"...And it'll hold 39 cans of your best pop, and not an ounce gone bad-"

"You realize that this is new machinery, and I can't trust it to work?"

"Sure do, sir. There is a complete waranty and a money back guarantee of your lost profits if it doesn't work out."

"Well, then, I guess I will..."

Then the man with the squeaky shoes walks away.

The owner of the shop walks back inside.