When I selected "I don't know" for all the questions about a brand, there then wasn't the logical "maybe" to the question "would you buy this brand".
I didn't bother converting euros to pounds or miles to km, so those answers may be a little off.
We were indeed thinking about adding 'Maybe' as an option, but figured that would be equal to 'No' if you have no knowledge about the brand at all (i.e. you won't buy something you don't know). I understand your logic though and agree this forces you to pick an option which does not fully represent your state of mind regarding the question.
Thanks for completing the survey. We'll keep the survey running until Sunday. The lottery draw will be somewhere next week. There are a lot of responses already, but any additional participants are obviously much appreciated.