well i did a quote for a transit lwb 190 as iam 18 as well to but i did it as i had a full uk licence was 1400.00 with ncb and it was 3rd party only.
and when i did it as a licence provisional it was 1623.00.
but like bigneil says any 1st car/van is gona be sky high.
even when i did a quote skoda rapid 130 1.3 with ncb and a full uk licence was over the 1300.00 mark
hope this helps
