# Proxy cost per account: per GB, per IP and per port

> Proxy cost per account depends on how the seller bills. Worked sums for per-GB, per-IP and per-port plans at one, ten and a hundred profiles.

Source: https://mosaicbrowser.com/blog/proxy-cost-per-account

## What a proxy costs per profile per month

Proxy cost per account depends on how the seller bills. Worked sums for per-GB, per-IP and per-port plans at one, ten and a hundred profiles.

![0.75 GB: Where per GB and per IP cost the same](https://mosaicbrowser.com/covers/proxy-cost-per-account.webp)

Proxy cost per account comes down to the unit on the invoice. On a per-GB residential plan, one profile costs whatever it downloads. On a per-IP plan, it costs one address a month. On a per-port mobile plan, it costs a port, used or idle. We priced all three below at $4, $3 and $50, round figures we made up so the division is easy to follow; swap in your seller's own numbers and the method still holds.

## The three ways sellers bill

Per GB is residential: a gateway hostname, a username with a session token in it, and a pool of home connections behind that. The meter counts bytes through the gateway. A sticky session holds one exit until its minutes run out or the household goes offline, and then the next session is somewhere else. (The wholesale reasons a residential gigabyte costs what it does are in [why residential proxies cost what they cost per GB](https://mosaicbrowser.com/blog/why-residential-proxies-cost-more).)

Per IP is what sellers call ISP or static residential. You get a list of `host:port:user:pass` lines, one per address, billed monthly. The address on the first of the month is the address on the thirtieth, and the traffic is usually included or capped high enough not to matter.

Per port is mobile. The port leads to a modem or phone on a carrier network, and the address behind it changes when the carrier or a rotate link says so. Sending 1 GB through it costs the same as sending 50.

## The example prices

To keep the arithmetic honest we picked round numbers and labelled them. They are not quotes.

| Plan | Example price |
| --- | --- |
| Residential, per GB | $4 per GB |
| ISP, per IP | $3 per IP per month |
| Mobile, per port | $50 per port per month |

Traffic is the other input, and it is a guess. We have no measured monthly figure for a profile, so the table assumes 0.5 GB for a light one (sign in, read a seller dashboard, sign out) and 3 GB for a heavy one (an image feed, some autoplay video). Both are assumptions, not readings. Whatever the real number is, a browser profile pulls every font, script and image the page names, which a scraper asking only for the HTML does not.

Mosaic is a desktop app

Email yourself the link and open it on your computer.

[How it works: Provider minting](https://mosaicbrowser.com/features/proxy-providers)

## Per profile, at one, ten and a hundred

Every row gives each profile its own exit, because profiles that share an exit share an address in the site's logs.

| Plan | 1 profile | 10 profiles | 100 profiles |
| --- | --- | --- | --- |
| Residential, light (0.5 GB each) | $2 | $20 | $200 |
| Residential, heavy (3 GB each) | $12 | $120 | $1,200 |
| ISP, any traffic within the cap | $3 | $30 | $300 |
| Mobile, one port per profile | $50 | $500 | $5,000 |

Two things fall out of it.

The per-GB and per-IP lines cross at a traffic figure you can work out from two prices. Divide the monthly price of one IP by the price of one gigabyte: $3 divided by $4 is 0.75 GB. A profile that uses less than 0.75 GB a month is cheaper on residential traffic; one that uses more is cheaper on its own ISP address. With your seller's real prices the crossing point moves, and the sum is the same.

Mobile is a different kind of cost. At one port per profile it is the most expensive line by a wide margin, and the only way to make it cheap is to put several profiles behind one port, which gives them one exit at a time. That works for a short check from a carrier network. For accounts that have to stay apart, it undoes the reason for having separate profiles.

## Long-lived accounts and bursts want different plans

A seller account you keep for a year should sign in from the same address most mornings. A login from Leeds on Monday and Lisbon on Thursday is the sort of thing a risk team writes a rule about. The ISP line gives you that sameness for $3 whatever happens. A sticky residential session gives it only until the session expires, and the session after it lands on another household. Past 0.75 GB a month, the account you keep is cheaper on its own address as well as steadier.

Short jobs flip the sum. Say you look at one checkout page from ten countries, once, at roughly 50 MB a session. That is 500 MB, so $2 at $4 per GB. Ten ISP addresses in ten countries would be $30 for a month you used for an afternoon.

You can have both on one machine. Mosaic does not care how many sellers you use, so the accounts you keep can sit on ISP lines and the tests can mint from a per-GB pool.

## What the sum leaves out

Three things the table cannot show.

1. Dead sessions. A residential session that reaches nothing tends to stay dead on every retry with the same token; in our own measurement one session returned four 504s in a row while fresh ones returned 200. Its bytes are close to zero, so the bill never shows it. What it costs is the launch. Mosaic spends a failure on a new session rather than another attempt on the dead one, up to three attempts, and only for sessions it minted itself.
2. Minimums. A plan with a monthly minimum makes the first profile pay all of it, which wrecks the one-profile column.
3. Reputation. A $3 address that sits on a blocklist is worth less than nothing to the account behind it. Mosaic scores an exit's reputation before you trust an account to it, and you should read that score before paying for a second month.

## Where Mosaic sits in the bill

Mosaic sells no proxy traffic. Every dollar in the tables goes to your seller, and the totals are the same with or without us. Paste one gateway line into Proxies › Add provider and Mosaic keeps it as a [provider](https://mosaicbrowser.com/features/proxy-providers) template: each profile mints its own session id from it, so [forty profiles get forty exits](https://mosaicbrowser.com/blog/forty-profiles-forty-exits) from a single paste.

What Mosaic costs is separate and does not grow with the library: Pro is $49 a month, one plan, everything unlimited, so at a hundred profiles it works out to 49 cents a profile. At that size the proxy is the bigger line by far, which is the right way round. [Why Mosaic Pro is one price](https://mosaicbrowser.com/blog/one-price) explains why profiles cost us nothing to give away.

## Questions

### Is a per-GB or a per-IP proxy cheaper per account?

Work out the break-even. At $3 an IP and $4 a GB (our made-up round figures), $3 / $4 = 0.75 GB a month. Under 0.75 GB, pay per GB; over it, rent the address. Put your seller's two prices in and the line moves.

### How much traffic does one browser profile use a month?

We don't have a measured figure, and it swings more than any price. Our sums assume 0.5 GB for a sign-in-and-read profile and 3 GB for one on an image feed with video. For your own number, run one profile for a week and read the bytes off your seller's usage page.

### Can several profiles share one proxy to save money?

They can, and then they share an exit, which is the thing a separate profile per account exists to avoid. Two accounts behind one address look like one household to the site. Price the plan for one exit per profile.

### Does Mosaic include proxy traffic?

No. Mosaic sells no proxy traffic and adds nothing to your seller's bill. You bring your own seller, and with a provider saved from one gateway line each profile mints its own session.

## Related

[Why residential proxies cost what they cost per GB](https://mosaicbrowser.com/blog/why-residential-proxies-cost-more): Residential proxies are expensive because every gigabyte crosses somebody's home connection. For a browser profile, count working sessions, not gigabytes.

[Residential proxy: an exit on a home internet connection](https://mosaicbrowser.com/glossary/residential-proxy): A residential proxy sends your traffic out through an address an ISP assigned to a home connection, so sites see a household rather than a data center.

[Provider accounts: one gateway line, one exit per profile](https://mosaicbrowser.com/features/proxy-providers): Paste your proxy seller's gateway line once and Mosaic mints a separate session for every profile, so each one browses from its own exit address.

[Why Mosaic Pro is one price](https://mosaicbrowser.com/blog/one-price): Anti-detect browser pricing per profile sells a count. Mosaic Pro is $49 a month for any count, because a profile on your own disk costs us nothing.

[Same proxy session on multiple profiles: forty profiles, forty exits](https://mosaicbrowser.com/blog/forty-profiles-forty-exits): The same proxy session on multiple profiles means one exit IP for all of them. A batch of ours did it in September 2026; now every profile mints its own.

["Unlimited bandwidth" proxies and where the limit really is](https://mosaicbrowser.com/blog/unlimited-bandwidth-proxies): An unlimited bandwidth residential proxy still has a limit. It moves to threads, ports, speed or a fair-use clause, and the terms say which one.

[The proxy bill is usually bigger than the browser bill](https://mosaicbrowser.com/blog/proxy-bill-bigger-than-browser): Past a couple of dozen profiles, the exits cost more each month than the anti-detect browser. That is why we price per month, not per profile.

[Per-GB vs per-IP proxy pricing for long-lived profiles](https://mosaicbrowser.com/blog/per-gb-vs-per-ip-proxy-pricing): Per GB vs per IP proxy pricing over a year: a light profile is cheaper per GB, a busy one per IP, and the crossover is lifetime gigabytes against months.

## Mosaic, on your own computer

The browser this blog is about: its own Chromium, fingerprints from real machines and a proxy exit per profile. Free holds 3 profiles. Pro is $49 a month for any number.

Mosaic is a desktop app

Email yourself the link and open it on your computer.