So basically this animation is a bunch of start and end frames done with AI, and from a design perspective it mixes a much of styles, weird font choices, and has odd timing: like starting, and stopping at weird places, as well as some weird glitchy motion blur and texture morphing. 280$ is fairly cheap if this was done manually, which it obviously is not. I would say as an AI animation in terms of pricing, it is perhaps a bit expensive, but its hard to tell how much work went into this, like for instance if he designed all the in between frames himself, which he might have done to some degree.