In that case the best value is easy to spot. The other one has a ribbed interior and the can is easily removed. Often when someone cannot get the can out their just throw away the can cooler. When you can get the can out easily you use that product over and over. So the more expensive one last much longer and displays your advertising longer making it the better value.
Many products have similar differences.
Allow us to help you find the best value. This often leads to a less expensive promotional item when fewer items at a great value would serve better. Judge the number of products to be given away by multiplying the number of hours your exhibit will be open by the number of staff you will have in attendance and then by the number 30. For example if you have a trade show for two days or 16 hours and you have 3 staff people you would need 1440 items to give away. It does not matter how many people may or may not be attending.