I'm sure there's a 'best one' for under $150, but a good one? I really highly doubt it.

Opteka produce fisheye adapter lenses, they have a 0.2x converter, so whack that onto a wide lens and it will become quite fishey looking. It should quite happily bolt onto the 18-55 kit lens.

The cheapest prime lenses themselves will be many hundreds, so an adapter is probably going to be the best option for now. By zooming in a bit, you should be able to remove some of the effect of the black outer ring.