It’s a question I’ve been asked for 30 years. Back in the early 2000s, pre-internet, we’d stand and watch a sharp, used tractor or combine sell for $200,000. We’d say, “Can these prices go any higher?

Strong auction pricing is holding across all types of used farming equipment, and older, pre-DEF combines and tractors are leading the bump-in-value charge. For example, the average auction price on a ...