DataExpert.io: data engineering and AI courses at $52,300 MRR
DataExpert.io sells data-engineering and AI courses as a $119-a-month subscription, with $52,300 in monthly recurring revenue verified by TrustMRR and $4.7M earned over its lifetime. It is the closest model in this batch to a solo expert: real expertise packaged as teaching, launched to an existing audience — in a market crowded with sellers of shortcuts.