I made a website promoting colon cleansing products back in 2006, and it made high 5 figures/month for close to 3 years. Had a chance to sell it for half a mill

I made a website promoting colon cleansing products back in 2006, and it made high 5 figures/month for close to 3 years. Had a chance to sell it for half a million near 2010, but stupidly didn't. I had to shut it down a few years later