I live in pinellas park. I need to come up with 30 dollars. Better than spending 54+ dollars. How often does the sensor need to be cleaned?

 

well, depends on how often you put it in a dirty situation. i have had to clean mine a few times a month if its airshow season. due to it usually being windy, and having to change lenses always increases the risk of it getting dirty. so it just depends. i'd also say if anything, invest in a rocket blower from Giottos. that help, but for solid dust on the sensors you still gotta wipe them.