Well, I appreciate your enthusiasm, and if you feel like giving it a shot I wouldn't be the guy to try to talk you out of it, but a few things to keep in mind.
a) Your time comes out of your profit, as do gas/shipping/storage/tools/band-aids/etc.
b) If I had all those things together right now and offered it to *you*, right now, as a kit for $450, would you buy it? Probably not. You'd more likely say "money's pretty tight, no thanks, I'll just do it myself and save the hundred bucks!
" ...or something to that effect. The point being, anyone who's going the cheap lift route is doing exactly that: going the cheap route. Convincing them to pad some other guy's pocket just to save a little effort will be a very, very tough sell. Especially on the boards most of us frequent. We're Suzuki guys, after all. Make sure you give a lot of thought to who your prospective customers really are.
That said, who knows. Maybe you can find some suckers on ebay or someplace who haven't done/don't want to do their homework. Businesses have been built on less.
Whatever you do, don't do anything silly until you've actually
done the lift once yourself...