Consulting leads carry the longest consideration cycles in this dataset, and the math has to respect that. Engagements run from $5,000 project work to six-figure retainers, buyers compare providers over weeks, and a lead that closes in month three is normal. The band prices reflect a market where the payoff justifies patience: professional-services leads sell at premium prices because a single engagement repays a quarter of spend.
Close rates here depend on qualification more than persuasion. The band runs 10 to 30 percent, and the difference between those numbers is usually a scoping call that disqualifies bad-fit inquiries early. Firms that put a partner on first calls close at the top of the band; firms that route leads to a contact form and wait sit at the bottom. The calculator's close input should reflect qualified-opportunity close, with the qualification screen counted as part of lead cost.
Authority assets change this vertical's economics in a way no other input does. A firm with published work, a known specialty, and referenceable clients converts the same lead at multiples of a generalist's rate, because the buyer arrives partly sold. In lead-math terms, the specialty is a close-rate multiplier that compounds every dollar of lead spend after it.
Worked example
A worked example: a firm averaging $18,000 engagements at 60% margin keeps $10,800 per client. Closing 15% of qualified inquiries makes a lead worth $1,620; the divide-by-three ceiling of $540 clears the market's expensive end nearly three times over. Even at an 8% close, the ceiling ($288) stays above the top of the band, which is why consulting rewards patience with lead sources that other verticals would cut at week six.
The pipeline caveat: consulting revenue is lumpy, and the temptation is to buy leads only when the pipeline empties. Lead prices do not care about your utilization, and starting from zero every few months means paying ramp-up costs repeatedly. A small, permanent lead budget outperforms a large intermittent one in almost every professional-services model.