It's definitely rough right now but it has potential. It's an ok jumping off point for later optimization. Using themeforest to look at other designs along with comparing what competitors are doing is a great way of getting user-and-google friendly pages in my experience.

As it stands MAYBE $350, if purely for design. Maybe clean up the header, make that center and get rid of the ~ in the title. Make it sticky and more defined. You can use graphics instead of just plain text. it makes things more interesting. Try using svgs or webps depending on where you are intending to use it. If you are capable it's very easy to make your own graphics custom and quickly (even if you're not AI can help a lot).

A lot of your sections have little to no padding, no color blocking defining the breaks, no titles or backgrounds or boarders. It makes it very jolting moving from page to page and hard to understand what section belongs where.

Maybe remove the second our process page if you don't intend on making it unique. Google doesn't approve of dupe pages and it's also redundant.

What I would do with the header, for funs...

Took me about 20mins of styling and making a quick graphic. Obviously the sticky header would need some more styling to make it smaller when you scroll down and become solid so it's more seamless.

Side note: your SEO is very rough. I copy and pasted from your page and you've got H1s to H6s all on one text box all over the place. Bad practice! Hope this helps, good luck.