Professional, clean site, looking great.
Downfall: My goal was to quickly find the cost for using an assistant, I could not find this. At a quick glance I thought the $25 per hour calculation chart sample was your rates.
Picture the business owner who needs you, chances their desk is filled with files and papers, there phone is ringing off the hook and they are being pulled in both directions....the last thing they have time for is reading and reading a website. I would say 95% of people stay focused with pictures and 50 words or less get to the point words. Example: See Legalzoom.com, we use this from time to time. I can go straight to what I need, read a brief on what I get and see the price. No need for me know who is behind the site, the logistics, or how much I will save (I know this by going directly to your site when I see the prices). Sure, you need to know who would use your site, but don't give your competitors the list. Less is best. Simple is better. A coupon for first time users is like a fishing lear. I like your concept and site, less wording and details.
This is only my opinon. I am not an expert. I have two websites and this is just from trial with error and a whole lot of research concerning business marketing.
Keep doing what your doing, your on the right path.