I suppose, but I base it all around a day rate, for example if I think a job will take 5 days and I want to earn £10 per day I will put in a price for £50 + costs. But yes, I will still put a price in rather than specify a day rate. Some companies I work for know my day rate and ask me to guesstimate how long it may take, just so they have some idea of the end cost.
Can I book you for a few months bri @£10 a day lmao...