I plugged in my details to Go Compare for my previous car which has a value of about £8,500. I have 40+ years driving but given the length of my ban I have lost any NCD I built up. I have retired so will only be doing around 6,000 miles a year. The car was a Honda CrV EX 2.2dti.
The best quotes I received were in the region of £1,090 and the 'cheapest' wanted a compulsory excess of £4,000.
I think an older, less expensive car around £5k with a smaller engine would maybe get this down to the £750 mark, but in any case it is a lot more the the £250 I last paid for insurance.
Hope you get what you want.