ServerlessHorrors is a blog that collects scary stories of people who suddenly received a high server charge.

Most paid cloud servers and APIs use a pay-as-you-go system where the fee varies depending on the amount of usage. As a result, if the number of service users suddenly increases or you forget to set a fee cap, you can often end up with an eye-poppingly high fee.
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If you visit ServerlessHorrors, you will find a variety of user experiences. Let's take a look at the top post at the time of writing, which was ' ~$1,189.420/month .'

The report was made by '

Curated Design reports, 'There were no changes, no spikes in traffic, and usage was normal. Then, all of a sudden, my bill jumped from $49 to $1,189 per month.'
Webflow ( @webflow ) just charged us $1,189 twice for bandwidth on https://t.co/s5tYumseTu .
— Curated (@CuratedDesignHQ) May 12, 2025
We run a basic collection site. No changes, no traffic spikes — just normal usage.
Suddenly, our billing jumps from $49 to $1,189/month. No opt-in, no explanation.
We're now trying to… pic.twitter.com/0F3YDKltSE
Curated Design used Webflow as its hosting platform. Webflow's terms of service stipulated that if they exceeded their bandwidth cap for two consecutive months, they would be automatically upgraded with additional add-ons based on their usage. Curated Design's traffic exceeded 2TB in one month, and 4TB in two months. This resulted in the plan being upgraded and the price increasing.
Here's what happened:
— Curated (@CuratedDesignHQ) May 13, 2025
Over the last two months, @Webflow charged us a total of $2,280 for what ended up being just 4TB of traffic. Before these charges, our monthly bill was $69.
(For context, the market rate for that same amount of bandwidth on a CDN like BunnyCDN is around… pic.twitter.com/zQV1fU5qJR
The sudden increase in traffic volume was due to the site's 1,000-pixel wide cover image, a PNG file with a large file size. As the number of site visits increased, so did the amount of data transferred. Curated Design points out that the market price for similar traffic volume with other CDN services is around $40 to $80.
Curated Design also acknowledges that it received emails warning it was approaching its data limit, but claims that the emails were vague and did not suggest the possibility of a large charge exceeding $1,000. Therefore, it did not anticipate that 2TB of traffic would incur such a high cost, and did not take any special precautions.
After contacting Webflow, Curated Design was granted a one-time refund and the automatically added add-ons were removed, for which Curated Design expressed its gratitude to Webflow.
Quick update: @Webflow agreed to issue a one-time refund and remove the bandwidth add-ons from our https://t.co/s5tYumsMJ2 .
— Curated (@CuratedDesignHQ) May 13, 2025
Appreciate the Webflow support team and @leinwand for stepping in and helping resolve it.
Also, thanks to everyone who supported us with likes and…
ServerlessHorrors has a collection of other stories. They'll all send chills down your spine, so if you're interested, give them a read instead of a ghost story to forget the summer heat.
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in Web Service, Posted by log1i_yk