Q1. "Is cost a factor in your decision to make sustainable choices?" (1)Yes (2)No

I think the idea of providing a scale for answers is the best way to go and I think Aasrondeep Bains suggestions of including Not applicable is greats as it factors those who choose not to opt for sustainable choices.

Staying away from incorporating food in the question is very important, in my opinion, especially since there are so many sustainable choices that do not include food but still cost money- ie passive solar design for homes, triple glazed windows, transportation options

The base of what I want to know (and hopefully what everyone else is aiming for) from this question is how money impacts people's ability/motivation to make sustainable choices so I think we need to keep the wording simple. I think something along the lines of the original questions with a answer scale would be great