I experiences the same thing, what I do now to get pass that, I have off site prices and on site prices. Each work with retainer and non retainer jobs, onsite prices are higher because I use my car to get to and from the location. It is explained in the retainer and non retainer agreement that if onsite is chosen the price is more than my per hour fee. Onsite agreements must be paid in full before the work commences.
Off site is in the comfort of my own office, I tell them advantage of that also, but the final decision is theirs. They are business owner out there that still don't know about the Virtual Assistant Industry. Some owners think we're temps and not business owners.
I worked with one gentlemen onsite, when I arrived, I was dress like a business professional. He looked at me and asked, "Why are you dressed in business attire", I in turn told him, "I am a business owner, the way I dress also reflects upon my business." I worked that month in his office, the next month his bill was lower and I was offsite in my office working for him in my robe and my curlers (lol)