You'd have to drill down into the cost, but flat rate per year may be difficult to price before achieving scale. How much compute and storage does the average v

You'd have to drill down into the cost, but flat rate per year may be difficult to price before achieving scale. How much compute and storage does the average video require? One hour GPU compute may be on order of $1. 1TB cloud data store per year may be on order of $10. Charging $20 per video for unlimited annotation could be more sensible. Akin to Podscripter's $10 per episode podcast transcription service. Best of luck!