What 100 GB of Postgres storage costs per month: Supabase, Neon and Turso

A hundred gigabytes is the size where a database stops being a demo and the storage line starts to have an opinion. It is also the size where included allowances still matter, because every one of these three vendors bundles some storage before the per-gigabyte rate applies.

At 100 GB the storage line is $11.50 on Supabase Pro, $35.00 on Neon Launch, $68.25 on Turso Developer and $38.00 on Turso Scaler. Add each plan's own fee and the totals separate further.

The storage line at 100 GB

The arithmetic is (100 GB minus the included allowance) times the rate, then the plan fee added back. Neon has no plan fee on Launch, so its total is the storage line plus whatever compute the database uses.

What the 100 GB numbers actually mean

The ordering here is not the ordering at 1 TB. At 100 GB, Turso Scaler is the second cheapest option and Turso Developer is the most expensive, purely because Scaler's 24 GB allowance and $0.50 rate beat Developer's 9 GB and $0.75. A team on Developer paying $73.24 for 100 GB is paying $10.32 more than Scaler's $62.92 for the same data, in exchange for a lower monthly fee at small sizes.

Supabase's rate is a third of Neon's and a sixth of Turso Developer's, but it applies to provisioned disk on one instance. The 8 GB included covers development; 100 GB of provisioned disk is a resize, not a line item that grows on its own.

Neon's $35.00 is the most honest number in the table because nothing is bundled. The storage charge is metered per GB-month, and a second charge sits beside it: history storage at $0.20 per GB-month, billed on the write-ahead log retained inside your restore window. A busy 100 GB database with a 7-day window pays more than $35.

How we measured it

Rates and included allowances come from the three pricing pages, all opened on 2026-10-25. Nothing was provisioned and no benchmark was run. Every total multiplies 100 GB minus the published allowance by the published rate, adds the published plan fee where one exists, and is marked calculated where it is arithmetic rather than a quoted figure. Turso's plan fees are the annual-billing rates its page prints, $4.99 and $24.92, used here as the monthly fee.

What changes in practice

The first trap is that storage is provisioned on one vendor and metered on another. Supabase bills the disk size you choose and keeps billing it whether or not it is full; Neon bills dollars per gigabyte-month actually used. A database that grows from 90 GB to 100 GB costs $1.25 more a month on Supabase after a resize and $3.50 more on Neon automatically.

The second is that Turso's plan structure inverts with size. Developer at $4.99 is the cheapest entry, but its 9 GB allowance and $0.75 rate make it the worst deal at 100 GB. Scaler at $24.92 pays for itself at this volume and has a lower overage rate for row reads as well.

The third is what is not in the table. Neon's history storage, Supabase's egress at $0.09 per GB beyond 250 GB, and Turso's sync allowance all scale with usage rather than with the database size, and each can exceed the storage line at 100 GB for a read-heavy product.

The fourth is what a resize costs in process rather than money. Supabase bills provisioned disk, so reaching 100 GB is a resize on one instance; Neon and Turso meter usage and need no resize at all, and their higher per-gigabyte rates are what that flexibility costs.

Bottom line

At 100 GB, Supabase Pro is the cheapest storage by a wide margin at $11.50 for the line and $36.50 all in. If the workload is SQLite-shaped and reads dominate, Turso Scaler at $62.92 is the sane Turso tier and Developer is the wrong one at this size. Neon's $35.00 is fair for metered storage and becomes expensive only once history storage and always-on compute sit beside it.