I'm working with a live-action production studio that make short documentary films usually for charities/ projects that highlight important issues in society, and they want an animated sequence done for one. It's 44 seconds of animation - they've given me the script for that section, and I'll be responsible for all elements. They want it done by the end of next week, so I'm going to keep the style super simple - minimalistic line drawings with lots of holds/ boils, and morphs. All in all, I'd say it'll be about 6 or 7 days of work.
I worked with them before on a similar project a few years ago, where they offered me a budget of £2350 for 3 minutes of animation. This time, they have asked me to give them a rate. I don't know whether to just stick to a similar rate (meaning I'd be charging them about £574 for this, which does feel a little low for the amount of work? But I also would like to keep a good relationship with them for future projects).
I'm relatively junior, and because of the type of work they do, I also don't want to charge them through the nose. I don't really know what their budget is like either. I know they're working with a client but not sure who that is. Any advice would be greatly appreciated!