Minutes are the unit

A judge is not pricing an opinion. An opinion forms in seconds, whatever the register. A judge is pricing the time it takes to perform that opinion convincingly on camera, and time is the one input that scales almost directly with the number written into the brief.

The unit being sold

Ask for thirty seconds and a judge is selling you thirty seconds of held attention, planned and delivered once. Ask for four minutes and you are asking for eight times that, plus the planning a longer piece needs to avoid drifting or repeating itself. Time is the unit across performance work generally: the US Bureau of Labor Statistics reports actors' pay as an hourly wage rather than an annual salary, and notes that part-time work is common. Everything else in a brief - the register, the specifics, the tone - shapes how that time is spent. Length decides how much time there is to spend in the first place, which is why it moves a quote more than any single other choice, and it is worth reading against everything else that factors into a price as the dominant term rather than one item on a list.

Why longer is not just "more of the same"

A minute of any register holds together on energy alone. Four minutes does not; it needs a shape, a few distinct beats, somewhere to build to, and a judge who tries to stretch a one-beat idea across four minutes produces something that sags in the middle and reads as padding rather than presence. So a longer clip is not linearly priced against a short one - it is priced against the extra planning a longer piece needs to actually earn its length, on top of the extra minutes themselves. This is also where a quote, done properly, names the length as a range rather than a fixed figure, because a judge sizing a longer piece is estimating structure as well as seconds.

What this means for a brief

State a rough length rather than leaving it open, and expect the quote to move noticeably between "a minute or so" and "take your time, several minutes." Neither is wrong to ask for. What is worth knowing before you ask is that this single number will do more to the price than a detailed register or a specific hook will, which is the opposite of how an automated score is priced, where length of output plays no part because there is no performance time behind the number at all. A model reading a photo does not budget its attention the way a person does, and the case for quoting instead of a fixed menu is built partly on this fact: no single posted price can be fair to both a thirty-second request and a four-minute one filed under the same label.

Length is the lever with the biggest effect and the least room for negotiation, because it is the most honest of all the inputs - it is quite literally the size of the job. Measurement services price differently again, since a technique rather than a performance is what is being paid for there. Rate Cock shows length as one of the first fields a judge fills in on a quote for exactly this reason, and a buyer who is undecided on length is often better served by asking what a shorter version would cost than by leaving the field blank.