Best S3 Compatible Object Storage: Flat $4.9/TB Pricing, Zero Egress Surprises

If you've ever typed "best S3 compatible object storage" into a search box, you probably already know the drill. You want somewhere to dump backups, park media, feed a CI/CD pipeline, or just stash the endless pile of unstructured data your app keeps generating — and you want it to speak the same API your tools already understand, without you having to rewrite half your codebase.

That "speaks the same API" part is the whole point of S3 compatibility. The AWS S3 API quietly became the lingua franca of object storage, and now pretty much every backup tool, media pipeline, Terraform module, and Jenkins job on the planet knows how to talk to it. So when you're shopping around, "S3 compatible" isn't a nice-to-have — it's the price of admission. The real question is who gives you that compatibility without charging you like you're running a small country.

Let's walk through what to look for, where the hidden costs usually hide, and one option that's been quietly undercutting the big names on price.

What "best" actually means for S3 compatible storage

When people rank S3 compatible providers, they tend to fixate on per-GB sticker price and ignore the stuff that actually shows up on the invoice. Here's what genuinely matters when you're picking a home for your objects:

• True S3 API compatibility — not "mostly compatible," not "compatible with these five endpoints." You want to drop in your existing SDK, point it at a new endpoint, and have things just work with tools like aws-sdk, rclone, s3cmd, MinIO client, and the dozens of backup apps that speak S3 natively.

• Predictable pricing — the worst bills are the ones you can't predict. Egress fees, per-request charges, minimum-duration commitments, and "tier" surprises are where the money leaks.

• Durability and redundancy — your archive should survive a failed drive without you even noticing.

• Network throughput — cheap storage is useless if pulling a 50GB backup takes until next Tuesday.

• No lock-in contracts — month-to-month, scale up or down, walk away when you want.

Plenty of big names nail the first item and quietly fail the rest. AWS S3 itself is the reference implementation, but the egress fees are legendary. Wasabi is cheap per-GB but has a 90-day minimum storage commitment that bites if you delete early. Backblaze B2 is friendly but class A transaction fees add up. Cloudflare R2 famously charges zero egress, which is great, though you're tied into the Cloudflare ecosystem for it to make sense.

The usual suspects, briefly

You don't need me to re-rank the entire market — there are plenty of 21-provider comparison tables out there already. The short version: if raw API breadth and global footprint matter more than cost, AWS S3 is still the safe default. If you want cheap-and-cheerful with zero egress and you're already on Cloudflare, R2 is hard to argue with. If you want dead-simple pricing and don't mind a minimum retention window, Wasabi works.

But if your actual goal is "give me S3 compatibility, predictable flat pricing, decent throughput, and don't make me sign anything," there's a less-hyped option worth a look: Sharktech's S3 Object Storage.

Sharktech S3 Object Storage: the flat-rate option

Sharktech has been around the hosting world for years — mostly known for DDoS-protected dedicated servers and cloud hosting — and they rolled out an S3 compatible object storage platform that's now out of public beta and generally available across their data centers in Los Angeles, Denver, Chicago, and Amsterdam.

The thing that jumps out immediately is the pricing model. It is aggressively simple:

• Storage: $4.90 per TB per month. That's the rate whether you store 250GB or 100TB. No tiered discounts you have to qualify for, no "you must commit to X TB to unlock this rate."

• Bandwidth: free. The first 1TB of monthly bandwidth is $0.00, and the page positions bandwidth as essentially bundled rather than metered at punitive rates the way the hyperscalers do it.

• No hidden line items. Their own pitch is that storage and bandwidth are the only things on the invoice. No per-request fees, no API call surcharges, no class A/B transaction gymnastics.

For context, AWS S3 Standard sits around $0.023/GB ($23/TB) before you even touch egress, and the cheapest S3 compatible alternatives usually land somewhere in the $5–$7/TB range once you factor in their various fees. Sharktech's $4.9/TB with free bandwidth is, by the numbers, one of the lowest storage-only rates you'll find from a managed S3 compatible provider — and it's flat, not "starting at."

👉 Check current Sharktech S3 pricing and sign up

What you actually get for $4.90/TB

Here's the plan structure, such as it is. There's effectively one published entry plan and then custom quotes for anything bigger.

The standard plan — $4.90/month for 1TB of storage with 1TB of included bandwidth. This is the plan that ships with the order link on their S3 product page. It's month-to-month, no contract, and you can scale storage up from there. Suitable for: small-to-mid backups, a media bucket for a web app, a CI/CD artifact store, or anyone who wants to test the waters before committing real data.

👉 Get started with the 1TB S3 plan

Custom plans — for anything beyond the standard footprint, Sharktech builds a quote around your actual storage and bandwidth needs. The pricing stays the same $4.9/TB rate, so it scales linearly rather than hitting you with volume-tier cliffs. Suitable for: larger archives, multi-region replication, companies doing serious backup retention, or anyone whose storage needs are measured in dozens of TB. You reach out to their team and they put together a configuration.

👉 Talk to Sharktech about a custom S3 storage plan

Where it fits in the S3 compatible landscape

Pricing alone doesn't make a storage product good — you also need it to actually behave like S3 and perform like storage. On the compatibility side, Sharktech's platform speaks the S3 API directly, which means the standard tooling — aws-sdk-js, boto3, s3cmd, rclone, MinIO client, restic, Veeam, and the long tail of backup apps that support "S3 compatible" as a destination — will connect to it without you writing glue code.

On performance, their data centers run 40G inbound and outbound connectivity, which is more than enough for backup and media workloads where the bottleneck is almost always the client side, not the storage side. The storage clusters are redundant, so durability is handled at the cluster level rather than depending on you to set up cross-region replication yourself.

The use cases where this kind of setup shines are the same ones S3 compatible storage is generally good for:

• Backups and archives — the classic. Point restic, Borg, Veeam, or your database's native S3 backup at it and forget about it.

• DevOps artifact storage — CI/CD build artifacts, Docker layer caches, Terraform state, release packages. Native integrations with Jenkins, GitLab, and Terraform just work.

• Media hosting for web apps — images, videos, user uploads. Pull them directly with HTML/JS or stick a CDN in front.

• Static site asset storage — offload the heavy stuff from your app servers.

The use case where it's not the obvious pick is if you need a globally distributed edge with built-in CDN behavior out of the box — that's where Cloudflare R2's zero-egress-plus-edge model has a structural advantage. And if you need AWS-specific features like Lambda triggers on object events or deep integration with the broader AWS ecosystem, you're still going to end up on S3 proper. But for "I need a bucket, I need it cheap, I need it to speak S3, and I need it to not surprise me on the bill," Sharktech slots in neatly.

Who should seriously consider this

If any of these describe you, it's worth a look before you default to one of the usual suspects:

• You're tired of egress fees eating your backup budget alive.

• You're a small team or solo dev who doesn't qualify for the volume discounts the big providers dangle.

• You want month-to-month with no 90-day minimum retention window.

• You're already running other infrastructure and just need a clean S3 endpoint for backups or media.

• You've done the math on AWS S3 and the monthly number made you wince.

The 1TB plan at $4.90 is genuinely cheap enough that you can spin it up, point a backup job at it, and see how it behaves under your actual workload before you commit to anything bigger. No contract, no minimum, no "call us for enterprise pricing" friction.

👉 Try Sharktech S3 Object Storage from $4.90/TB

The bottom line

There's no single "best S3 compatible object storage" — there's only the best fit for your workload, your budget, and your tolerance for invoice surprises. If you want maximum ecosystem integration and don't care about cost, AWS S3. If you're already on Cloudflare and want zero egress, R2. If you want the simplest possible flat-rate S3 endpoint with free bandwidth and no contract, Sharktech's $4.9/TB plan is one of the more honest options on the market right now.

The whole pitch is "storage and bandwidth are the only items on the invoice," and in a category notorious for hidden fees, that kind of simplicity is itself a feature. Spin up the 1TB plan, point your existing S3 tooling at it, and let the bill tell you whether it's the right home for your data.

👉 Get started with Sharktech S3 Object Storage