Then the answer is still no, for me. 55 bucks is alot of money for something you should be able to see for free or get yourself for free. If it was really high quality, with a really beautiful girl whose actually ticklish and isn't faking it or asked to fake it, and theres actually a plot or something to it and its not half-assed then maybe 30 bucks....but even thats pushing it for an amateur video.
Video quality is also an issue. If quality of the girl and the ticklers, the cameraman, the environment, the props, the use of the props, the tickling, the audio, and the video are top notch and the equipment is higher-end good stuff being used to it's full ability, then higher prices are more justified.