I'm a fan of the LA's Totally Awesome.....but yea, it can be hard to find the stuff "cheap".....it seems extremely similar to the make up of Simple Green, Purple Power, Super Clean, Grease Lightning, etc...all seem to have that "2-Butoxyethanol" base to them - which I hear is really bad for the body....so you're supposed to wear like a full rubber boots/suit/gloves and don't get any on your skin lol.
But yea, I use the Totally Awesome in my washer as a bleach alternative, detailing the car, etc......bought a couple different spray bottles and have it pre-measured at various ratios....cause like Glass/Windows if you have too much Totally Awesome it'll leave hella streaks/soap on the windows....only need like 1-2 oz. per gallon....doesn't seem like a lot, but it works, actually been using it in my washer fluid tank, just keep refilling the same old Prestone jug (I like the construction, vs. the RainX bottle....too flimsy) with 2 oz. Totally Awesome, rest distilled water (we got hard water here....). So it's like 68c for the gallon of water, and the gallon jug of Totally Awesome is $3 depending where you go - lately I've been having to resort to the smaller spray bottles though, as my local WM stopped selling the gallons, and don't make it to the Dollar General or Family Dollar that often.
But yea, windshield washer additive, cleaning up tires/rims, cleaning the interior up, works great.
As with the Purple Power, Simple Green, et. all - they note "not for use on shiny metal, but I haven't had a problem with the Totally Awesome. The other above mentioned products also seem to say not to be used on shiny metals, glass, plastics, etc....
Perhaps the Totally Awesome is just more diluted than the others?
And ontop of that, they have further recommended dilution ratios, depending on the job.