"I've tried a lot of cheap lasers and the only one in your price range that has held up well on a shotgun is the LaserMax. Very good quality for the money and very low profile. "
Here is personal experience. If you really want a laser on your shotgun, consider this.
Either way, do yourself a favor, shoot the gun enough to be confident with it ( hundreds of rounds). You don't need to practice with expensive Buckshot. Then shoot it some more.
It's fun. Then shoot it some more.
It's still fun.