Thanks for the recommendations. I'll work on the site as soon as my computer is back up and running (I don't have access from my phone).

I've added the buy/donate buttons to the nav bar, added a screenshot of the client, removed the link to buy on eBay, made the page more accessible for people with screen readers, and fixed a typo. Thanks again for the suggestions. It's not a flashy corporate looking site, but it's better than it was, and it still loads #lightning fast, without any tracking, javascript, CDNs or other such nonsense.