Commencez par l’usage : choisir entre les catégories de comptes

A quick disambiguation first, because the phrase is overloaded. If you are trying to switch an Instagram account between personal, business and creator, or picking a field on a tax return, or choosing between bank products, none of this is about that. This is about deciding which category of account to buy on a marketplace.

The decision is easier than the number of category pages suggests, because most of the difference between categories is irrelevant to any given buyer. What matters is a single field, and which field it is depends entirely on what the account is for.

The mapping

What it is for	The field that decides it	What is safe to ignore
Feeding a tool or a script	Delivery format	Age, profile, followers, region
Something people will look at	Profile completeness, then registration tier	Protocol access, tokens
Passing one verification	Region, and the warranty window	Everything about the account’s past
Handing to a client	Second factor and recovery mailbox	Appearance of history
Holding for a while	Recovery mailbox, above all	Almost everything else

Reading down the third column is the point. Most of what a listing tells you is noise for your particular purpose, and the money saved by ignoring it is usually larger than the money saved by shopping harder within it.

Feeding a tool: format is the whole decision

If a script or a client will use the account, the delivery format decides whether the purchase works at all, and a mismatch is a total loss rather than a partial one. A session file will not go into a web login, a token generally will not sign in through a browser, and a desktop session folder is useless to a library.

Two things make this easier than it sounds. On some shelves format is not priced at all, so there is nothing to gain by compromising. And the cheapest tier is often the right one: on the X shelf, accounts registered from 2022 onward sit below the middle price, and none of what makes older ones expensive matters to a tool.

Something people will look at: profile, then vintage

Here a human forms an impression, so the fields that shape an impression are the ones worth paying for. A filled profile runs about half again the middle price on the X shelf; the pre-2022 registration tiers run about double.

What is worth knowing is that neither buys an audience. There is no follower attribute in the pricing at all, and where a listing states a count it is free text rather than a catalogue field, so it is a thing to verify on arrival rather than to shop on.

Passing one verification: region and the clock

If the account exists to get through a single signup or confirmation, its history is irrelevant. What matters is whether it is acceptable where you are using it, which usually means the region, and whether you have time to discover a failure.

The warranty window is the field people skip here and it is the one that determines whether a failure costs you anything. Across the catalogue delivery is instant and the median window is twelve hours, but the share of listings arriving with a window too short to be useful runs from around three per cent at the best to roughly thirty per cent at the weakest. That is a filter, it costs nothing to apply, and for a one-shot purchase it is worth more than any other field.

Handing to a client, or holding: control, not appearance

Both of these come down to the same thing, which is whether the account is durably yours. That is decided by the second factor and the recovery mailbox, and by nothing else.

On the X shelf both are near-standard equipment rather than upgrades: two-factor on about seventy per cent of listings at the middle price, a recovery mailbox on about two thirds at ten per cent above it, and both together on more than half. So this is the rare case where the thing you should care about is also the thing you barely pay for, and a listing priced up for having them is charging for the norm.

Three questions that resolve most of it

1. Will a person ever look at this account? If no, ignore everything about appearance and buy on format and terms. This one question eliminates most of the catalogue's price range.
2. Do I need it after this week? If no, the recovery mailbox does not matter and neither does the second factor. If yes, they are the only fields that do.
3. What happens if it does not work? If the answer is "I buy another one", optimise for price. If the answer is "I have a problem", optimise for the warranty window, because that is what converts a failure into a refund rather than a loss.

The category pages themselves

Once you know which field decides your purchase, the category page is just where you apply it as a filter. The pieces on delivery formats and on the twelve pre-purchase checks go deeper on the two fields that come up most often, and the per-brand guides cover what is unusual about individual shelves.

The catalogue starts at the accounts hub and the email hub.