I'm able to charge around that (sometimes higher) solo because I have 10+ years of demonstrable experience (public github repos and working online demos) and ca

I'm able to charge around that (sometimes higher) solo because I have 10+ years of demonstrable experience (public github repos and working online demos) and can also speak to intricacies of the current market in a few niches I'm personally passionnate about (electronics, radio, biomedical). Word-of-mouth spreads fast after the first few good engagements, so I imagine most other people in this position don't need to advertise their rates since they're already booked back-to-back :)