Hi Mattie

It's a good question - I decided not to go with retainers because of a few reasons not the least of which was I didn't want even the possibility of people feeling like they hadn't gotten use of their hours. It just didn't seem 'fair' to me somehow...if the situation were reversed I'd want and expect paid time to 'roll over' which of course isn't how it works with a retainer. That's not to say that it doesn't work well for other people, but I just didn't feel comfortable with it.
Also, I didn't want to deal with keeping track of X retainer hours based on X dollars per hour (relative to the number of hours purchased.) I try to keep my own office backend as simple and as streamlined as possible and straight hourly helps me achieve that.