Well I've been saying most of this since I first joined up. probably one of the reasons I get hated on alot LOL. But the most important thing anyone on here can do is know your products. If you know your products truely you'll save a buttload of cash. And I'll even go so far as to break a few things down for you guys.
The absoulte best cleaners out there are Citrus. All natural and extreamly effective. very little side effects. Unless for some oddball reason I just can't find it all my APC's are citrus based.
The bug cleaner that "Instanly" dissovles bugs.... Is just a diluted down version of the orange coolant Dexcool. It was found by accident by students in automotive school awhile ago and it got marketed very well. ALL of them are some variation of that forumula. So If you want to save some cash and can't afford the stoners,
Meg's, etc etc etc versions of the marked up little bottles or cans try it out. 10:1 dilutions
Filler products add gloss. They get slammed alot on here for being a cheap way to correct (or look like a correction) But they can have a very valid purpose to a LSP as long as you've already properly corrected the surface the fillers once broke down will add a great amount of gloss to the top of the surface. (besides all products have fillers to some extent anyways... Pretty sure that's already been proven)
$30 wax and $3000 wax last roughly the same amount of time
Glass cleaner seriously has a 1000 different uses... Try out a few.
And never underestimate the power of an air compressor and a goo air gun...
I'm sure I can add a lot more later... But I'm about to run out the door.