There are several strategies that you can use to minimize costs when preparing online clips.
One strategy that you can use to minimize the costs when preparing online clips is that of hiring, rather than buying, the video recording equipment. But you need to take note of the fact that this strategy only works in the short-term: in the long run, having your own video recording equipment turns out to be more cost effective (and convenient) than always hiring the equipment.
Another strategy that you can use to minimize costs when preparing online clips is that of editing the clips by yourself, as opposed to paying someone to do the editing for you. But then, there is the possibility that the product (clip) you end up with will be of lower quality than if you had paid a professional to do the editing for you.
Yet another strategy you can use to minimize costs when preparing online clips is that of getting volunteers to act various roles in the clips, as opposed to using paid actors. Again, the catch here is in the fact that you will probably end up with clips of lower quality than would have been the case if you had opted for professional actors.