A custom website by Lasting Impression Web Design is usually no more that a (1) one month radio advertisement that plays 3 times a day, 3 days a week for 4 weeks. (~$600)
Yes, if the host you are using is compatible with the system I use, which is Joomla!
I seldom just make minor changes to an existing website. Normally I will create a new site based on what you already have or on what you would like it to be changed to. A free consultation will answer many of these questions and both of us a better idea of how we should proceed.
Normally within a week. This greatly depends on several things.
Not at all. I work with you, one on one every step of the way. Through e-mails, phone calls, video conferencing and if needed, a face to face meeting or meetings will keep your project on schedule and insure the final result is exactly what you envision.