Peak season is the worst time to buy cold traffic

Seasonal planning tends to arrive as a single instruction: spend more, the demand is there.

The demand is there. So is every competitor, holding the same instruction, bidding into the same auction. Cold acquisition costs in peak weeks routinely run well above the rest of the year, and the brands that scale hardest into it are often buying their worst-value traffic of the twelve months.

A lean budget forces the better question

At Harry Specters we ran a 45-day seasonal campaign on a deliberately small budget. The constraint was the useful part — it made scaling cold acquisition impossible, which meant the only question left was where does existing demand already sit?

The answer, as it usually is, was: in the customer list.

We ran a retention-first structure. Meta handled high-intent retargeting only. Klaviyo carried lifecycle and repeat revenue.

Over the 45 days:

• Meta: £2,528.86 spent, 200 orders, £10,173.55 revenue — a 4.02× return.
• Klaviyo: 327 orders, £17,134.24 revenue, £52.40 average order value.
• Campaign total: 521 orders, £27,170.19 revenue.

Roughly two thirds of the revenue came from the channel with no media cost attached to it.

Why this is not an argument against paid

It would be easy to read that as "email beats ads." It doesn't. The two are not substitutes.

Paid built the list. Retargeting caught the people who were already close. Lifecycle harvested the people who had already bought once and were being reminded at the right moment. Remove any layer and the other two get worse.

The point is narrower: in a period of inflated auction prices, the marginal pound is better spent reaching people who already know you than bidding against your competitors for strangers.

A checklist before your next peak

• Segment before you spend. Past purchasers, cart abandoners, recent browsers and cold prospects should not share a budget line.
• Set a CAC ceiling for cold traffic specifically, and hold it, rather than letting a blended figure disguise expensive acquisition.
• Audit your lifecycle flows before the season, not during it. Abandoned cart, post-purchase and win-back sequences are the cheapest revenue available, and they are usually stale.
• Decide in advance what you will cut if cold CAC exceeds the ceiling. Deciding mid-season, under pressure, produces worse choices.

Restraint in a peak period is not timidity. It is refusing to pay a premium for the privilege of competing.