I looked for verification and the $700K figure is only listed on shady, non-documented 'net worth' sites.
The site (Yahoo Finance is just the aggregator) the video takes the 700K figure from is from a site (GOBankingRates) that claims to reach BILLIONS of readers. It makes the 700K claim with zero evidence linked. Furthermore it DOES state the majority of her wealth comes from the construction business, and states that wealth is 25 million USD (which I can believe but that blows away the whole claim that she was worth only 700K USD before she entered Congress).

https://finance.yahoo.com/news/rich-marjorie-taylor-greene-123013554.html
Greenes financial journey is as unconventional as her political career. Since joining Congress in 2021, her net worth has skyrocketed, jumping from around $700,000
(my add, there is NO LINK in the article to prove this claim) to as much as $25 million. As of October 2025, Marjorie Taylor Greenes estimated net worth is approximately $25 million, which marks a significant increase from before she took office.
Her wealth primarily comes from her majority ownership in her familys commercial construction business, Taylor Commercial, Inc., which is valued at up to $25 million in her financial disclosures. Other assets include real property, bank accounts and publicly traded stocks.
Again there is no evidence in the article the video uses at all that shows the 700K USD net worth right before she entered Congress.
Here is a site that lists here year by year net worth going back to before 2021. I contridicts the video (and article the video uses) claim.
https://www.quiverquant.com/congresstrading/politician/Marjorie%20Taylor%20Greene-G000596/net-worth

*These holdings are collected from annual financial disclosure statements. There are occasionally parsing errors, and it does not include recent transactions.
more data at the link