I do financial modeling/consulting for startups seeking VC funding.

First year revenue was about $5k. This year I am currently at $15k (about 200% revenue growth) on track to hopefully hit 20k by years end. Margins sit about 95% due to low marketing/advertising cost. I promote myself on Fiverr which is very cheap.

Have not sold it. Still trying to scale it and launch pre-built models for SaaS companies on my website.

Ecommerce. 3 years. Sold for around $250k.

I run thisdatabase of one-person business, where I interview indie founders on these questions.