What is the average cost of car insurance for a single adult?

£321 I don't know what the 321 pounds means above, but I just renewed my policy in California as follows:

Liability - 50/100/25

Uninsured Motorist - 50/100/3.5

Comprhensive - $250 deductible

Collision - $250 deductible Premium - $261.80 for six months

Single Male

Discounts - Auto/Home - Good Driver - Persistency