Auto insurance just like any other insurance can be a big problem if you purchase same based on the assumption of a good price.
Generally speaking there is two types of auto insurance; Stated Value and Actual Cash Value (ACV). Most policy's are written as ACV, the cheapest type. The purchaser "ASSUMES" ACV means the value of his car..WRONG.. When dealing with the average daily driver, if there is a claim, the payout by the carrier will be based on current "Blue Book" values, i.e. high book or low book depending on condition, mileage etc. If the carrier thinks the damage exceeds the "book value" they total the vehicle, usually paying LOW BOOK which could leave the owner owing money on a vehicle he no longer has.
Don't be mislead into thinking that ACV will cover your $45,000 '34 conv when the Price Guide only says a #1 is worth $26,000.
Stated/Agreed Value on the other had has a premium based on the appraised and/or stated value of the vehicle. The cost of the premium will be in proportion to the dollar amount of the policy.
I have had Hagerty for over ten years, insuring five cars ranging from a value of 65k to 15k, my policy is slightly over $1,000. I switched from the carrier I had for over 20 years because some of my cars are modified, some are dead stock.. The previous carrier hassled me every year about my modified cars. The modifications were only later model engines, hydraulic brakes and some speed equipment on my '36 Ford.
Hagerty wanted a statement of facts, two pix of each vehicle and an official appraised value on the cars over $50k.