Hello and welcome to Healthcare Magic. Thanks for your query.
I understand that 600 dollars is a huge amount and it's even puzzling to me why a course of antibiotics and a cream would cost that much. I presume that you don't have insurance, so the only option would be to be prescribed more cost-effective medication.
I would suggest that you can let the CRNP know that you cannot afford trhe medication and request her to prescribe something else more cost-effective and affordable. Since acne
is not a serious condition, I don't think your grandson needs a very strong antibiotic or other expensive medication.
Wish you all the best.
Dr. Sheeba Stephen
Emergency Medicine Specialist