Place this clip right after the reveal shot, then follow the purchase gag with a Pop Sound Effect on the next product cut, and finish checkout scenes with the Click Nice Sound Effect as the buy button is tapped.
About this sound
This 1.5-second voice clip has Philip J. Fry blurting out that he wants to pay right now, waving cash at something he cannot resist. It feels gleefully desperate and funny, like desire turned all the way up in an instant. It comes from the 2010 Futurama episode Attack of the Killer App.