It's $2 a set. If you like it that much I would stick with it. If you string your racquets it would be a pain yes. I look at it this way. Whatever makes me play my best or makes me get better is what I need no matter how much the pain of stringing racquets or money.
My strokes- http://www.youtube.com/watch?v=JrhYnuZFn3M
My serves- http://www.youtube.com/watch?v=gW3SE7fS9vU&feature=plcp