I'm 99% sure that the HealthInsurance.com domain name changed hands for USD $8,133,000 in July 2019. Here's the evidence:
1. https://www.sec.gov/Archives/edgar/data/1561387/000149315220003318/ex99-1.htm (page 9)
"Acquisition of domain name" of $8,133 (that's in thousands, so that's $8,133,000)...