I don't think rates of return are a well grasped concept in agriculture.
Maybe not with some, but IME there are very few farmers left that don't grasp concepts like this.
One thing that may make it appear like farmers don't look at rate of return is that in many cases they have to balance this against opportunity cost. A given piece of land may only come up for sale once in 2-3 generations! So when it does, the farmer has to carefully consider what both the near and long term implications are of both buying it AND not buying it.
Several times my last farming relatives have had people rolling their eyes when they "overpaid" for land, but these were not decisions that were taken lightly. In one case, they paid $1000 per acre more than was considered "the going rate" for an 80 acre parcel that represented the last land in that section that they didn't already own. In addition to buying the convenience and efficiency of adjacent land, the main consideration was that this was the first time since the 1930s that that piece had come for sale. So the opportunity cost of NOT buying the land was also large. The second piece was yes, they farmed that 80 at essentially "no profit" for a number of years, but then guess what? Another couple of crop price runup years made land prices jump way past what they paid pre acre for that 80 and then everyone who thought they were crazy was wondering how they saw the price runup coming and bought when it was cheap.
What I've learned over time is that there are 2 phases OTHER PEOPLE go through when a guy buys hunting land:
1. Phase 1: Everybody thinks you're an idiot for paying so much for scrubby old hunting land. You could have had a nice [insert nice thing here, lake cabin, house expansion, classic car, etc] for that. Phase 1 lasts about 5-10 years.
2. Phase 2: Everybody thinks you're a genius for buying when land was cheap and wonders how you saw it coming and bought when you did. This phase lasts forever.
Grouse