Depends where you are - with 11 years no claims, I paid around £500 a year in London on a Volvo v70 2.4 litre, currently paying £230 a year (out of London) for a huge people carrier that also has my wife as a named driver who has only just learnt to drive.

Though yes - insuring 2 cars could be costly - some places offer a multi car discount, some with a device that only charges you when you drive.