As a senior front line healthcare worker in a specialised field I get 10% of that per hour. If you think charging $600 an hour to drive to woollies and pick up a cake is reasonable then you are out of your mind. You can get unlimited free delivery from woolies for $10 per month. If you get 2.5 deliveries per week, that is around $1 for getting the cake, assuming that wad the only item you got or couldn't just pick one up when at woolies for your regular shop. Did your partner invoice you the car rental, car insurance, petrol etc that you used?