A picture of the item did not increase the product's worth to the participant.
A description of the product did not increase the product's worth to the participant.
Having the product in front of the participant increased the value of the product by more than 60%
In the end, research shown that participants are willing to spend more on a product when it is easy available. This research was also done with samples and the results were the same. Participants valued the actual product rather than the sample.