Depending on your confidence in yourself and your ability to execute sometimes also: Total Project Cost > Weekly rates > Day rates > Hourly rates.

Charging someone £10k for a solution can be better if you know you can do it quickly and changes the math for the buisness. They are more likely to pay a higher amount for a solution rather than an hourly rate.

Yup outcome based pricing is best.

I save my clients 20-30% across the board on their digital transformation projects, the solution price or rate doesn’t matter compared to the 6-7-8 figures I lace in their pocket.

Solution pricing can be further extended into contingency based pricing. Have the clients gather pricing for you and then hammer home a better deal and have a cheque cut for the portion of the savings.