Fully loaded versus marginal cost thinking

The first SDR and the fourth SDR carry the same salary and are not remotely the same purchase. Starting a function is priced fully loaded: the seat drags the whole apparatus behind it. Adding a seat to a function that already works is priced at margin: the apparatus exists, and the new rep just occupies it. These are two different kinds of math, and most outbound budgeting mistakes come from applying the wrong one. There are exactly two errors, and they point in opposite directions.
Error one: pricing the first seat at margin
A founder planning the first SDR hire looks at a base salary in the mid forties and budgets accordingly. But the first seat is buying things no later seat pays for: a tool stack that does not exist yet, running ten to fifteen thousand dollars a year on its own; management capacity that has to be invented, usually out of the founder's calendar; ramp with no playbook and nobody adjacent to learn from; and the recruiting cost of a role with 34 to 40 percent annual turnover. Fully loaded, the seat runs roughly $10,000 a month, the line-by-line stack we priced in the January cost post. The first seat is the most expensive seat a company ever buys, because it buys the factory along with the worker. Budgeting it at margin is how outbound programs end up half-funded by June, killed by August, and remembered as proof that outbound does not work.
Error two: pricing added seats at full freight
The reverse mistake blocks teams that should expand. Once the playbook is written, the tooling bought, and the manager in place, the third seat does not cost what the first one did. The overhead amortizes; the marginal cost of one more rep is salary, variable comp, and a thin slice of everything else. Teams that quote the full roughly $10,000 figure against an expansion decision are taxing seat three for a factory that seat one already paid for, and the expansion that should have cleared the bar does not. The payback math on a marginal seat in a working system is the best it will ever look, which is precisely when hesitation costs the most. The related trap is letting the factory itself bloat until the marginal frame stops being true, the tool sprawl problem wearing a headcount disguise.
What the frames say about build versus buy
Run both frames against outsourcing and the picture gets honest. For a first function, an outsourced seat competes with the fully loaded number, because the factory arrives with the rep: training, management, tooling, and playbook are inside the fee. That comparison is not close. For a six-rep team with a working system, an in-house marginal seat is a fair fight, and we say so. Our own price behaves the same in both frames, which is the point: $3,499 a month, published, fully loaded, with no tooling line or management line hiding under it. Three reps run $10,497 a month, about the fully loaded cost of one in-house hire, which is what it looks like when the marginal frame and the loaded frame finally agree.
The whole model, with every line item visible, is on the math page. If you are unsure which frame your next seat belongs in, book a strategy call and we will run your numbers in both.
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