Back from the vet - which went much better than I had hoped for as Arthur's wounds still looked superficial and he is not in any distress. So the total amount is:

1 minute examination: $41.00
Amoxicillin x 10 tablets: $18.40

Plus taxes and a bag of dry food that suddenly went up in price by 25% for a total of $85.15.

I think it's time to reconsider the catfood.