Trucking looks like one market. It is not. The same company selling ELD devices, dispatch, jobs and compliance is really selling to four different people, and the moment you treat them as one audience the numbers go flat.
So the first decision was structural, not creative. Four business lines, four ad accounts, four budgets, four sets of creatives. That is what makes the results below comparable - and it is what exposed the real story in the data.
Three of the four lines came in between $7.17 and $8.35 per lead. Dispatch alone produced 1,450 leads at $7.55 across 52 ad sets. Driver recruitment produced 754 applications at $8.35, and the biggest single win there was a Spanish-language ad set: 249 applications at $9.34, an audience the English creatives never touched.
The fourth line, ELD Expert, came in at $59.15 per lead - seven times the others. Same team, same channel, same process. The difference was the audience: ELD compliance sells to a narrow, well-defined set of carriers. Frequency in that account ran at 5.11 against 2.65 in the device account, which is what a small audience looks like in a report. You can buy more leads there, but you pay a steep premium for each one.
That is the lesson worth taking from this case. The channel does not set the cost of a lead - the size and readiness of the audience does. When the audience is broad and the offer is concrete, $7 leads are normal in trucking. When the audience is a few thousand carriers, $59 is what the market charges, and the honest move is to budget for it rather than pretend an optimisation will fix it.
One caveat, the same one as every other case here: cheap leads are not results. Trucking leads go cold fast, and the accounts that performed were the ones where somebody called back the same day.