Here's a story I like to tell in this situation:
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Years ago, Joe Sixpack got a job as a helper for Fly-By-Night Electric. He started out working with a journeyman wiring houses for Cut Corners Construction. Joe turned out to be a pretty good electrician, learning fast and working hard. As the years went by, Joe got pretty good at wiring houses. Soon, he was running the jobs himself, and had his own helper.
Then recently, Joe got to thinking. "Fly-By-Night charges Cut Corners ten grand to wire a house. I know I get paid about $1500, and my helper gets $1000. I know the material costs around $2500.......... so that means the boss is making five grand just sitting at the office endorsing checks!"
So Joe decides to strike out on his own. "Man, this'll be great! I'll charge just $7000 to wire the houses, and with only $2500 in material, I'll pocket $4500 for each house I do....... Jeez, that's more than three times what I was making for 'the man'!"
So Joe hangs out his shingle. . He doesn't have any health insurance, thinking he'll get that later when things really get started. Suddenly, he realizes he needs to be licensed. So he takes the test, and spends more money for the test and license. He also doesn't understand that driving his own truck costs money, both in gas, repairs, insurance, etc
All fired up, he gets his first job for Cut Corners. Right from the start, Cut Corners wants a current liability insurance certificate. So Joe forks out $3000 for insurance. A few weeks later, he gets a letter from the state saying he's not a registered contractor. So another $600 is spent. Oh, yea, the city says they need $1250 for a permit.
A few days into the first job, Cut Corners says they need temporary power. Joe didn't figure the cost of a temp pole into the job, but he builds one and gets it hooked up. Joe finds out he needs more than a 3/8" drill and 4-foot stepladder. So he goes out and buys more cords and a couple ladders. Every time Joe needs material or another tool, he'd drive down to Home Depot and whip out the plastic. Pretty soon, he realizes he's a couple days behind schedule. Why? He's working alone, and doesn't have his old helper with him.
So Joe starts working 12-hours days, and a couple Saturdays as well. He skips his daughter's dance recital, and misses his son's Little league game. He comes home dirty, tired and grouchy, which cause his family to stay away from him.
By the time the house is roughed in, his credit card is maxed out and Joe needs to borrow money from his parents. "Just until I get this job done, then I'll be rolling in dough" he tells them. He borrows even more money just to buy the material he needs to trim the house. By this time, he has alienated his family and taken his credit rating down below 400.
And the sad truth is, by the time job is done, he's been paid only $7000 and has spent $14000 just to 'be in business'. So he tells Cut Corners the next job will be $8500, thinking he can 'make it up' on the future work. But even that 'extra' $1500 'from the next job' won't cover his $7000 shortfall. Besides, Cut Corners won't hire him again because Joe caused them to get behind on their schedule. And to add insult to injury, they found someone else to do the job for less.
Dejected, Joe goes home, only to find a letter from the IRS saying they want $3250 for the income tax Joe owes from that job. The state also wants $675 for sales tax. All the 'profit' Joe thought he was going to make went to pay his bills, leaving nothing to pay his parents back with.
And who did Cut Corners hire to wire their next house? Joe's old helper from Fly-By-Night!