Yes, the dozens of people in that RR were great. Just one person made me decide not to try another RR, even though I was lucky to see the box before the greedy person.
But it was balanced out by all the generous people who were clearly BIG seed savers. There were some quart and even GALLON bags of saved seed in that big flat rate box.
Since then I've realized that I have SO little space I don't want to grow many "NO ID" plants. I want to grow mostly known cultivars so I can save "clean" seed with known IDs.