Correct. Marketing is everythng and it's most likely going to cost you some cash.

I remember Amanda Hocking saying that if it weren't for facebook and twitter she would never have made it. But at the time she did all her marketing herself because she had no extra money to spend on it. She was a caregiver at a nursing home which is where she wrote her first kindle books during her down times. She also couldn't afford an editor (which was obvious, lol).