How much would a fully custom Laravel nonprofit website like this normally cost?

I built a full-stack non-profit foundation website in Laravel and I’m trying to get an idea of ​​how much a project like this is typically worth.
It is a fully featured Laravel site with a complete admin panel, dynamic content management, Paypal and Stripe support, blogging system, donation system, programs and supporters sections, testimonial management and a responsive frontend.
Everything in the screenshot is custom, not from a template.
Based on what you can see here, plus the fact that it was built from scratch in Laravel with full CRUD features and a custom UI, what do you estimate the price should be for a project like this? I’m trying to understand what freelancers or agencies would normally charge for something similar.
The entire project took me about 15 days of full-time work. I built it for a good friend who runs the foundation.
I didn’t ask for payment and don’t plan to, but he said he wants to give me something for the time and effort I put into it. I’m not trying to set a price or look for a specific amount.
I’m especially curious about what a website like this would normally cost if someone hired a developer, just to understand the market.
I also ask because it’s been about four years since I last freelanced, so I’m out of touch with current prices.
That’s the main reason I want to get an idea of ​​what these types of projects typically yield.

Thank you.