Training videos billing

I've seen various rates for training videos, but I thought I'd come here first for advice. The project is finished and I invested 13 hours of in-office screen capture and VO recording of their software running on virtual machines. Over 10 videos, I spent 25 hours editing them together with VO/EFX and BG music. I also spent another 5 hours transcoding and uploading said videos for their distribution.
I'm just not sure about rates bc I've never done this scope of project before. I work in the Metro Atlanta area and the client was a theater company with point of sale and back office terminals. They were very happy with the finished product. Any help is greatly appreciated.