Yes. I'm not saying to speed wrap a vehicle.. At all the wrap trade shows they have competitions. Avery, 3M, Etc throw them together - The person with the best wrap in the quickest time ends up getting something stupidly cheap like a roll of vinyl for free. They do it for fun... I wouldn't. But the same guy can put up a 10,000 SQFT wall wrap in the same amount of time as some people can do 2,000.
We also subcontract to a few different sign installers when we get busy. We have more work than we have installers... and training people to wrap vehicles or do wall wraps, and paying them all year round when we only get busy in summer isn't as cost effective as us partnering with other installers.
Each one charges by the SQFT - We wouldn't hire an installer that charges by the hour... For all we know he could take 10 hours to do a simple wall graphic. We also wouldn't pay them the same SQFT price to wrap a bumper, as we'd pay to vinyl a wall. Same with removals... No way in hell would we do a removal by the SQFT, for that we charge by the hour.
Theres too many variables to pick one over the other. You need to calculate Material cost and labor cost, and work out your own figure.