By default, smart bidding sees conversions as identical. A browser who requests a sample counts the same as someone who places a thousand-pound order. So the algorithm, trying to get you more conversions, happily fills the funnel with the cheap, easy ones, because they are easier to find.
That is fine if all your conversions really are equal. Almost no business works that way. The moment some customers are worth far more than others, treating them all the same leaves serious money on the table.
The fix is to hand Google the missing information: the value. Instead of counting every action as one, you assign each a monetary worth based on how likely it is to lead to profit, and how much profit.
Say one in ten completed quotes becomes a sale worth around four hundred and twenty-five pounds. A completed quote is therefore worth roughly a tenth of that, about fifty pounds. If half of quote requests become completed quotes, a quote request is worth around twenty-five. Now Google is not chasing form fills, it is chasing the actions that statistically lead to revenue, weighted by how much.
Get this right and the same budget quietly reshapes itself around your most valuable customers, without you touching a bid.
Value-based bidding earns its keep wherever value varies. In lead generation, where one enquiry is worth a hundred times another. In considered purchases, where the journey is long and the order large. In ecommerce, where basket sizes and margins differ wildly across the range. The flatter your values, the less it matters; the more they vary, the more it transforms performance.
The discipline is in the data. Work back from genuine sales, not guesses. Use real margin, not headline revenue, so you are bidding to profit. Cap values at what an outcome is truly worth so you do not overpay. And keep refining as more sales data comes in, because the model only gets sharper with feedback.
We will set up value-based bidding so your budget chases profit, not vanity conversions.