yep.
I'm curious how much of a broke ass you'd have to be to classify a $40 sensor as expensive (or $65 if you buy the blue box), then I'm curious about non-accessibility.. a 10mm on two extensions with maybe a wobble joint. To put that another way, if I can cram my big ol ham fists down there to replace it, I doubt anyone else is really struggling, but here's a trick if you are.. put the bolt in the 10mm socket ahead of time with a piece of plastic over the top to hold it in place while you guide it down in there. Shouldn't take you more than 5 minutes start to finish.
It's there, it requires no additional modifications, works well within the given parameters... so.. what would you rather have that costs less than $65 and works better?