I generally do fix bid on upwork.com. I have experimented lately with hourly but I'm only paying $8 for a developer and $4 for VA and $15 for a telemarketer. Where I could see a possible area is if you focus on project management and requirements gathering and were available during after work hours(5-10PM EST.) And managed projects but passed the lower billing rates on for the actual workers. Although I still want to see portfolios and passed work. Also, I'd want templates and code used to lower costs when possible. Just my 2 cents of what would be valuable to me.