Used equipment for sale – payment in person, no online checkout.
Export HTML: one self-contained file with every photo embedded as base64. Easiest to share, but grows with each photo (you get a warning above 25 MB).
Export for repo: a .zip with index.html plus a photos/ folder; the data points to photos/<item-id>-<n>.jpg by relative path. Unzip into the git repo and push – the repo stays light and sale.nulytica.com serves the photo files. Photos already referenced by path are kept as they are.
Export data (JSON): just the item data, for backup.