I know this isn't necessarily always the forum for helpful advice, but:
I have a fair amount of experience with surveys professionally. I'd recommend you re-think this survey, for two reasons - firstly I'd imagine relatively few people who start the survey will finish it, since the series of ranking activities are mechanically time-consuming (and confusing at times) and don't feel like "just" a ten-question survey. Secondly, I'm not convinced your results are going to be too meaningful - you are falling into the trap of trying to find out everything, and as a result will get shallow responses which tell you next to nothing. There are far too many factors in the 'ranking' activities which mean people may answer flippantly, get confused, or simply quit.
A further danger of ranking activities is that, depending on how you treat your results, they don't weight the difference between 1st and 2nd any differently to 7th and 8th (which might be a whole bunch of mediocrity). I'd wager you would almost certainly learn a lot more meaningful information (even if you might feel like you have fewer data points - the ones you do have might just actually mean something) by asking people to choose the top three factors they consider when purchasing gear in each of your categories.