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

What exactly are we measuring here? - we want to know if price influences a persons food purchasing choices related to sustainable products. So even if we know how important price is, it may be simpler for the person to simply say that they do our do not buy food that is sustainable if it is too expensive. Thus perhaps this is better:

Do you avoid purchasing sustainable food products because of their price difference from non-sustainable products even if you prefer the sustainable choice?

Yes or No