One month of doing this in my spare time has cost me 196 hours of my spare time. At $75 an hour, that's $14,700. I do have 196 hours of spare time, I do not have $14,700.
So you have spent $14,700. You could have reduced that to $4,000 by outsourcing at a high $20/hr and got it done sooner. You might have been collecting revenue by now. Your project would have been further along and you'd have more time to enjoy life, move the project even further along or do another project.