You may be able to bring down costs on your side and be more aggressive with your pricing.

My costs are a few dollars a month for the 7 sites I've set up, comes with SSL, gzip, etc.

There's a common AWS Service static site pattern that chains together four services: Serverless Computer, Object Storage, CDN, DNS.

In your mind, reframe what you do as a marketing service. Offer vanity email addresses, email marketing services. Add analytic reporting or something. Perhaps a Drift like embedded Facebook Messenger client as your customers already have Facebook?

Good luck!