I have a few rentals coming up in Hawaii, all but the first one booked through Budget (car class in parentheses):
HNL, 1 day (A), $35
HNL, 2 days (A), $106
LIH, 6 days (B), $255
KOA, 6 days (B), $255
HNL, 2 days (A), $106

Based in Norway I used the budget.no website, which means CDW and LI are included (they are also required by my credit card insurance that handles any excess/deductible in case of damage). Also unlimited mileage.

Budget were actually even cheaper than the comparison sites that I tried, and I found no codes that lowered the rate further, although it was sometimes possible to save 5-10% by prepaying.

Am I paying too much or do these rates seem reasonable?
Is there a reason Budget is cheaper than the competition, one that I should be aware of?

I have booked the smallest/cheapest cars as I am sure they are sufficient; there are only two of us travelling, and I don't normally have a car so any car will be an upgrade