After a websearch, always a little dodgy, I am sure that for thin thicknesses laser welding could be great for the homebuilder. Less distortion continual good penetrative and ease of use by amateur. I did a google purchase search on laser welders. 90% for sale are tig or stick etc welders. The price of welders from that laser search ranged from around $1000, very affordable. But on closer inspection none of these were actually laser, usually tig (already have tig set up so not at all interested). Then I found that the cheapest laser was $10,000. Just a lot outside my budget for new tools. $25,000 for a reasonably capable machine ( and I really do not know what makes a machine more or even less capable). To buy one I would have to be building a steel tube large aircraft to even start to think about one. Maybe one day they will get cheap. My car has laser headlights. Supposed to be able to light up to around 600metres ahead. The car manufacturer does not offer them any more. They were a $2k extra, I guess that they were not considered worth buying and hence not in demand.