We evaluate the impact of different types of information on participants' willingness-to-pay (WTP) and quantity choices for both beef and soy burger meat. To this end, we conducted a lab experiment to elicit WTP with multiple-price lists and chosen quantities of two products in a basket. Participants were provided with explanatory messages regarding the impact of beef and soy on health and environment before successive rounds of WTP determinations and quantity choices. Results show a weak impact of successive rounds of messages on WTP for both beef and soy, while leading to higher relative variations for chosen quantities. These relative changes in both WTP and quantities are then combined for computing the value of information. Results show a relatively low value of information compared to the expenditure for beef. In the last section of the paper we evaluate the effect of the introduction of a beef burger labeled “Fed without GMO” on WTP and quantity choices. Results underline a weak impact of “Fed without GMO” label on changing participants' preferences.