For jobs that are 3-4 colors, I would say find a printer, mark it up, and make some money off the install (I'm assuming you only have a cutter). A good wholesale printer will print, laminate, and contour cut a 3-4 color job cheaper than you can cut 3-4 colors for (providing you only have a cutter). Again, mark it up and charge for the install. Doing that, you could easy make $300 for installing some vinyl. Not bad IMO.