oniskanen

The author offers a pretty good 30 day refund policy if the font doesn't work in your use case: "Triplicate has no demo version, but I do offer a 30-day return option: if the fonts aren’t your style, you can cancel your license for a refund."

As for the customer service experience, the author himself has responded (within the day even) to a couple of emails when I had questions about licensing.