It's strange that page mentions rate limiting of 60 requests/min, 10 requests/sec. Are you sure the pricing is 100 requests per month?

If you go to their "packages" page[1] and select "premium", it gives you a table with "requests (per period)" and "month-to-month (price per period), and it is indeed "up to 100" for $99.00. For up to 500 tweets per request.

Seems pretty clear, though I can't fathom why they chose "periods" rather than "months". Crazy expensive.

[1]: https://developer.twitter.com/en/pricing/search-fullarchive

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edit: though the more I read it, the less confident I become. wtf is up with this copy.

It sure seems that way. If I understand their copy correctly this looks really really really expensive. I'm assuming the tweets per request is the limit to the result set returned, which is crazy small.

They don't specifically define the "period". No matter what the period is the price per search goes from $1 to $0.76 depending on volume.

I wonder how they can justify these prices?

I could certainly see a "search of everything by user" be very much worth a $1 for groups like intelligence agencies or background check companies.

That cost is then passed back on to the requester.

> I wonder how they can justify these prices

I mean, you've got to think someone has done an expected demand / price model and decided that this will maximize profits. Only people they need to justify to are shareholders.