B2B paid search is a small, expensive, slow-feedback market, and almost every mistake in it comes from treating it like a consumer one. The searchable audience for a specialised product may be a few hundred people a month, several of whom are competitors and analysts. A conversion is rarely a purchase, it is a form fill that may turn into revenue two quarters later. Clicks cost more because the customer is worth more. That combination means the account has to be judged on qualified pipeline rather than on cost per click, and it has to be given enough time to learn. This page covers what drives cost, what a competent agency does differently, and how to review an account you inherited.
Why B2B costs what it does
Three structural factors set the price. Auction density comes first: a small pool of high-value buyers attracts every competitor with funding, so bids rise until only well-targeted campaigns are viable. Wasted impressions come second, because job seekers, students, competitors and vendors all search the same terms as buyers, and unfiltered campaigns pay for every one of them. Long cycles come third, since a lead generated today may close in six months, which starves the platform's optimisation of the signal it needs. Agencies that respond by chasing cheaper clicks make the problem worse; the ones worth hiring narrow the targeting, feed conversion quality back into the platform and accept a higher cost per lead for better leads.
Measurement that reflects the real funnel
The single biggest lever in a B2B account is telling the platform which leads were actually good. That means connecting the CRM back to the campaign, so that a qualified opportunity, not a form fill, is what optimisation targets. Without it, a campaign will reliably learn to produce the cheapest form fills available, which are usually the least qualified. The second lever is honest attribution across a long cycle, where several touches contribute and last-click reporting hands all the credit to a branded search at the end. Ask any agency to explain how their reporting distinguishes a lead that closed from a lead that merely arrived.
What a competent agency does differently
It starts by narrowing rather than expanding: tight query control, exclusions for the audiences that look like buyers and are not, and landing pages written for one problem each rather than a generic demo request. It tests offers, not just ad copy, because in B2B the difference between a demo request and a useful piece of technical evidence changes conversion far more than a headline does. It reports on pipeline contribution and says plainly when a term is not worth bidding on. And it treats paid search marketing services as one part of a system, coordinating with organic pages so the same query is not being paid for twice when it could be earned.
Reviewing an account you already have
Five checks find most of the waste. Look at the search terms report rather than the keyword list, since that is where the real spend is. Check whether conversion tracking counts anything a visitor can do repeatedly, which inflates results. Check whether campaigns are bidding on brand terms that would have been won organically anyway. Check the landing pages: if paid traffic lands on the homepage, the campaign is paying to make visitors navigate. And check whether any offline conversion data goes back to the platform at all. Each of these is visible in an afternoon and each usually recovers more budget than a bid strategy change.
Questions people ask about b2b paid search
What is a reasonable cost per lead in B2B?
It depends entirely on deal value and close rate, so a benchmark from another company tells you nothing. Work backwards instead: from average deal value, gross margin, close rate from qualified lead, and the payback period you are willing to accept. That calculation produces the only cost per lead figure that matters for your account.
How long before a new campaign is worth judging?
Long enough to gather meaningful conversion data, which in low-volume B2B markets is usually a matter of months rather than weeks. Judge early campaigns on leading indicators, such as search term quality and landing page conversion, and hold the pipeline judgement until the cycle length has actually elapsed.
Should we bid on our own brand name?
Test it rather than assuming. Brand bidding is worth it when competitors bid on your name or when the paid result can carry an offer the organic result cannot. Pause it for a period and measure total enquiries, not just paid ones, because much of the traffic often arrives anyway.
In-house or agency for B2B paid search?
Agencies bring pattern recognition across many accounts and cover for holidays and turnover; in-house teams know the product and the sales process. The hybrid that usually works is an agency running the account with a named internal owner responsible for lead quality feedback, since that feedback is the input the platform needs most.