Hey, I just made my new website for my solo agency where I work mainly with SaaS companies. It was also published on the One Page Lover list :)
Now I have 2 clients and $5k/m revenue.
I thought to make a 5% referral program but screw it. I can give $1k for every client I get from recommendation.
I'm a product designer with 5 years experience working mainly with SaaS. I designed products that made a millions of revenue and one of them has 2 million users. You can find them on my portfolio on the website.
Cheers!