For that price, I would jump on the offer immediately. Licence schmlicence.
What type and wavelength?
Sometimes one has to accept risks. The technical ones can be mitigated easily.
Most such neighbors have 532 nm ones. If you had a different wavelength, you’d be in the clear anyway.
Add a lens. Make the beam convergent-divergent, with a short focal length lens, so the amount of energy per area falls FAST with distance - enough to ignite things near the lens, not enough to cause damage a couple inches away.
Also, people do that. Without the lens.
The goggles are the important part.
The shorter the wavelength, the more the scattering from small particles and even molecules.
