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. 2020 Dec 6;17(23):9117. doi: 10.3390/ijerph17239117
Willingness to Pay More Strongly Disagree Neutral Strongly Agree
I am likely to pay more to use drone food delivery services. 1 2 3 4 5 6 7
It is acceptable to pay more to use drone food delivery services. 1 2 3 4 5 6 7
I am likely to spend extra in order to use drone food delivery services. 1 2 3 4 5 6 7