when my Celica was whacked (minimal but expensive) I was offered £1300 for repairs plus £240 for not using a hire car at the other insurers expense or I could have the car written off and receive £1400 plus £240. This was based on a fully stock car with standard alloys. That was a year and a half ago and my car was just under 17 years old then. I got a few quotes before accepting and this was a reasonable amount to agree on. Hopefully this will help you when you deal with the insurance. Are your alloys insured?