Voluntary frugal - The HVAC company would not come out at no charge. Talked to someone in the field who said the issue is not urgent and they almost certainly caused it when they did the furnace cleaning. I will continue to monitor the still slow drip. Ideally I will live with this until my next furnace cleaning which will be with a different company.
Involuntary frugal - went to buy a new microwave with 7 acceptable brands written down. Target only had two other junky brands in stock. Bed Bath and Beyond had no microwaves at all. I grew up without a microwave and can wait until a decent, reliable one is available.