Wanted to know if the payment for Adobe lightroom is a one time payment of the amount stated for students for 19 dollars monthly.
No, it's a monthly subscription fee payable every month for as long as you want to use the software.
You never own the software with Adobe's Cloud model.
However, $19.99/month is the Student monthly fee for the entire Cloud, not just Lightroom.
Creative Cloud pricing and membership plans | Adobe Creative Cloud
Lightroom + Photoshop = $9.99/month
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