Two renewal emails landed in two different inboxes last week. Both raised the vendor’s price by roughly the same percentage. Both went to finance leaders who’d have to justify the change to a CFO already squeezing next year’s budget.
The first email opened with a number: “Effective your next billing cycle, your rate increases from $X to $Y.” The finance director read half of it before forwarding it to procurement with instructions to shop the competition.
The second email opened differently: “Starting this cycle, your plan includes three capabilities you were previously paying extra for.” The new price appeared four paragraphs later, folded into a sentence about total value delivered. That finance director’s reply, forwarded to her team, read: “Good — we needed this anyway.”
Same increase. Same math. Opposite reactions. The difference wasn’t the number. It was the sequence.
That fictional split-test is exactly what Microsoft ran for real, at scale, on July 1. Microsoft 365 Business Standard moved from $12.50 to $14 a month, Office 365 E3 from $23 to $26, and Frontline F1 jumped as much as 43% (Jones, 2026). Announced seven months in advance, the increase arrived bundled with Copilot Chat upgrades, Microsoft Defender for Office 365, and Intune Plan 2 — all folded into existing tiers “at no additional cost” (Herskowitz, 2025).
The behavioral trick hiding in plain sight
Daniel Kahneman and Amos Tversky’s prospect theory established that people weigh losses roughly twice as heavily as equivalent gains, judged against a reference point of “what I already have” (Kahneman & Tversky, 1979). A price increase is coded by the brain as a loss the instant it’s read. But there’s a second, quieter lever most executives miss: the fairness heuristic. Kahneman, Knetsch, and Thaler found that buyers accept a price increase as fair when the seller can point to a rising cost or a rising investment behind it — and reject it as exploitation when it looks like the seller is simply capturing more because demand allows it (Kahneman, Knetsch, & Thaler, 1986). Microsoft’s messaging supplies exactly that justification, publicly citing more than 1,100 features shipped across the platform in the prior year (Herskowitz, 2025). Layer in the endowment effect — once people believe they already possess something, they value it more than if they were simply offered the chance to buy it (Kahneman, Knetsch, & Thaler, 1990) — and the sequencing becomes the whole strategy: let the customer feel ownership of the new value before the invoice ever changes.
Two real companies, two opposite outcomes
Netflix ignored all of this in 2011. It split its streaming-and-DVD plan, raised the combined price 60%, and launched the ill-fated Qwikster spinoff in the same breath — no advance notice, no added value, no justification. Netflix lost 800,000 subscribers in a single quarter and watched its stock fall nearly 80% (Time, 2011). Reed Hastings later admitted the company had misjudged not the destination but “how quickly to move there” (Time, 2011) — a fairness and sequencing failure, not a math failure. Compare that to Amazon’s 2022 Prime increase: a 17% jump from $119 to $139, paired with an itemized list of new value — tripled original content, exclusive NFL rights, expanded delivery — and a CFO on record saying the program was “a much more valuable program today than it was in 2020” (CNBC, 2022). Amazon’s stock rose the day of the announcement. Same lever, opposite execution, opposite outcome.
What this means for your next renewal
Lead with the reason, not the number. Name the investment behind the increase before you name the price — that’s what satisfies the fairness heuristic (Kahneman et al., 1986).
Let the gain arrive before the invoice does. Even a 30- to 60-day gap between “here’s what’s new” and “here’s the new price” changes which experience anchors the relationship.
Quantify the value in dollars, not adjectives. “Enhanced security” is decoration. “$2-per-user protection now included at no charge” is proof, and it directly offsets the perceived size of the loss.
Match the justification to the segment. A price increase framed around AI features means nothing to a buyer who’ll never touch AI. Generic value narratives collapse the fairness effect for the exact customers most likely to leave.
The bottom line
A price increase is never purely a finance decision — it’s a behavioral event, and its sequencing determines whether your best customers renew or start quietly shopping your competitor’s price sheet. You don’t need Microsoft’s R&D budget to apply the lesson. You need the discipline to name the reason, deliver the value first, and let your customers feel the gain before they see the bill.
Free tool: the Pricing Communication Fairness Audit — a short scorecard to pressure-test your next renewal notice against the research above before it ships. Email me at rich@richsmiths.blog to request it, or tell me on LinkedIn: is your next renewal leading with the number, or the reason?
References
CNBC. (2022, February 3). Amazon increases the price of Prime nearly 17% to $139 per year. https://www.cnbc.com/2022/02/03/amazon-increases-the-price-of-prime-nearly-17percent-to-139-per-year.html
Herskowitz, N. (2025, December 4). Advancing Microsoft 365: New capabilities and pricing update. Microsoft 365 Blog. https://www.microsoft.com/en-us/microsoft-365/blog/2025/12/04/advancing-microsoft-365-new-capabilities-and-pricing-update/
Jones, E. (2026, July 1). Microsoft 365 price increase live today: Up to 43%, deeper for large enterprises. Tech Times. https://www.techtimes.com/articles/319445/20260701/microsoft-365-price-increase-live-today-43-deeper-large-enterprises.htm
Kahneman, D., Knetsch, J. L., & Thaler, R. (1986). Fairness as a constraint on profit seeking: Entitlements in the market. American Economic Review, 76(4), 728–741.
Kahneman, D., Knetsch, J. L., & Thaler, R. H. (1990). Experimental tests of the endowment effect and the Coase theorem. Journal of Political Economy, 98(6), 1325–1348.
Kahneman, D., & Tversky, A. (1979). Prospect theory: An analysis of decision under risk. Econometrica, 47(2), 263–291.
Time. (2011, October 24). Netflix loses 800,000 subscribers after price hike, Qwikster debacle. https://techland.time.com/2011/10/24/netflix-loses-800000-subscribers-after-price-hike-qwikster-debacle/
