Looks like you haven’t found the right shop or spoke with the right person. I treat every customer project and vehicle if it were my own. Nothing gets hacked and no corners get cut.
On the Allumaloy I have never seen it locally at any welding shop and I go to Rodgers, Strait and also Mills so that covers pretty much everyone locally. They used to have a website but I can’t find it now. Maybe they went out of business and the stuff on ebay is what is left. I would be interested to see how the tensile strength stacks up to a good TIG weld. If you purchase some I would like to buy a rod or two from you to try it out. Because it does look too good to be true especially with only using the heat from a propane torch
Check this out: http://newtechnologyproducts.net/index.asp