Okay, let’s break it down. Sergei has a broad skill set, including user experience, product development, and software development, which are all in demand. However, his skills are not particularly rare or highly specialized. He also works in Seattle, which is a tech hub, but the rates for these skills are not unusually high in this location. Considering his experience and skills, I would estimate his hourly rate to be around $125, which is slightly below average for a product professional in the Seattle area. This rate is also consistent with national averages for these skills.