You're an engineer and you've built your own product (no dev costs except your own time). Its serverless and hosting costs are minimal, < $1 per million request

You're an engineer and you've built your own product (no dev costs except your own time). Its serverless and hosting costs are minimal, < $1 per million requests (source: https://aws.amazon.com/lambda/pricing/ https://aws.amazon.com/lambda/pricing/). Assuming you convert $1 in ad spend to $1.15 in revenue, would this be possible?