• 1 lbs unsalted peanuts in the shell - $2.50
• 1 lbs unsalted shelled peanuts - $2.60
• 1 lbs peanut butter (just ground peanuts) - $2.30

This is US, but just in awe you were wondering what the difference is for us. I’m actually pretty shocked the prices are so close together no matter the form.